diff --git a/src/lib/eina/eina_accessor.h b/src/lib/eina/eina_accessor.h
index aed6d9d307..3586d3c197 100644
--- a/src/lib/eina/eina_accessor.h
+++ b/src/lib/eina/eina_accessor.h
@@ -301,10 +301,10 @@ EAPI Eina_Bool eina_accessor_unlock(Eina_Accessor *accessor) EINA_ARG_NONNULL(1)
  * @details This macro allows a convenient way to loop over all elements in an
  *          accessor, very similar to EINA_LIST_FOREACH().
  *
- * @param accessor The accessor to use
- * @param counter A counter used by eina_accessor_data_get() when
- *                iterating over the container.
- * @param data A pointer to store the data \n
+ * @param[in] accessor The accessor to use
+ * @param[out] counter A counter used by eina_accessor_data_get() when
+ *             iterating over the container.
+ * @param[out] data A pointer to store the data \n
  *             It must be a pointer to support getting
  *             its address since eina_accessor_data_get() requires a pointer.
  *
diff --git a/src/lib/eina/eina_file.h b/src/lib/eina/eina_file.h
index ea3e79481d..78c2b65596 100644
--- a/src/lib/eina/eina_file.h
+++ b/src/lib/eina/eina_file.h
@@ -288,7 +288,7 @@ EAPI Eina_Array    *eina_file_split(char *path) EINA_WARN_UNUSED_RESULT EINA_ARG
  *          only fetched when advancing the iterator, which means there is very little
  *          cost associated with creating the list and stopping halfway through it.
  *
- * @param [in] dir The name of the directory to list
+ * @param[in] dir The name of the directory to list
  * @return An #Eina_Iterator that walks over the files and directories
  *         in @p dir. On failure, it returns @c NULL.
  *
@@ -309,7 +309,7 @@ EAPI Eina_Iterator *eina_file_ls(const char *dir) EINA_WARN_UNUSED_RESULT EINA_A
  *          dir is only fetched when advancing the iterator, which means there is
  *          cost associated with creating the list and stopping halfway through it.
  *
- * @param [in] dir The name of the directory to list
+ * @param[in] dir The name of the directory to list
  *
  * @return An #Eina_Iterator that walks over the files and
  *         directories in @p dir. On failure, it returns @c NULL.
@@ -409,7 +409,7 @@ EAPI Eina_Bool eina_file_mkdtemp(const char *templatename, Eina_Tmpstr **path) E
  *          @p dir is only fetched when advancing the iterator, which means there is
  *          cost associated with creating the list and stopping halfway through it.
  *
- * @param [in] dir The name of the directory to list
+ * @param[in] dir The name of the directory to list
  *
  * @return An Eina_Iterator that walks over the files and
  *         directories in @p dir. On failure, it returns @c NULL.
diff --git a/src/lib/eina/eina_file_common.h b/src/lib/eina/eina_file_common.h
index c7ee3f87eb..142ee2d852 100644
--- a/src/lib/eina/eina_file_common.h
+++ b/src/lib/eina/eina_file_common.h
@@ -269,8 +269,8 @@ extern int _eina_file_log_dom;
 /**
  * @brief Map the entire contents of a virtual file to a buffer.
  *
- * @param file The virtual file to map in memory
- *
+ * @param[in] file The virtual file to map in memory
+ * @return The buffer
  */
 void *eina_file_virtual_map_all(Eina_File *file);
 
@@ -280,7 +280,7 @@ void *eina_file_virtual_map_all(Eina_File *file);
  * @param[in,out] file The virtual file to map in memory
  * @param[in] offset The offset inside the file to start mapping
  * @param[in] length The length of the region to map
- *
+ * @return The buffer
  */
 void *eina_file_virtual_map_new(Eina_File *file,
                                 unsigned long int offset, unsigned long int length);
diff --git a/src/lib/eina/eina_hash.h b/src/lib/eina/eina_hash.h
index 6efdfce34b..16344cfed4 100644
--- a/src/lib/eina/eina_hash.h
+++ b/src/lib/eina/eina_hash.h
@@ -311,7 +311,7 @@ typedef unsigned int (*Eina_Key_Length)(const void *key);
 
 /**
  * @def EINA_KEY_LENGTH
- * @param Function The function used to calculate length of hash key.
+ * @param[in] Function The function used to calculate length of hash key.
  */
 #define EINA_KEY_LENGTH(Function) ((Eina_Key_Length)Function)
 
@@ -322,7 +322,7 @@ typedef unsigned int (*Eina_Key_Length)(const void *key);
 typedef int          (*Eina_Key_Cmp)(const void *key1, int key1_length, const void *key2, int key2_length);
 /**
  * @def EINA_KEY_CMP
- * @param Function The function used to compare hash key.
+ * @param[in]Function The function used to compare hash key.
  */
 #define EINA_KEY_CMP(Function)    ((Eina_Key_Cmp)Function)
 
@@ -333,7 +333,7 @@ typedef int          (*Eina_Key_Cmp)(const void *key1, int key1_length, const vo
 typedef int          (*Eina_Key_Hash)(const void *key, int key_length);
 /**
  * @def EINA_KEY_HASH
- * @param Function The function used to hash key.
+ * @param[in] Function The function used to hash key.
  */
 #define EINA_KEY_HASH(Function)   ((Eina_Key_Hash)Function)
 
@@ -347,13 +347,13 @@ typedef Eina_Bool    (*Eina_Hash_Foreach)(const Eina_Hash *hash, const void *key
 /**
  * @brief Creates a new hash table.
  *
- * @param key_length_cb The function called when getting the size of the key.
- * @param key_cmp_cb The function called when comparing the keys.
- * @param key_hash_cb The function called when getting the values.
- * @param data_free_cb The function called on each value when the hash table is
+ * @param[in] key_length_cb The function called when getting the size of the key.
+ * @param[in] key_cmp_cb The function called when comparing the keys.
+ * @param[in] key_hash_cb The function called when getting the values.
+ * @param[in] data_free_cb The function called on each value when the hash table is
  * freed, or when an item is deleted from it. @c NULL can be passed as a
  * callback.
- * @param buckets_power_size The size of the buckets.
+ * @param[in] buckets_power_size The size of the buckets.
  * @return The new hash table, or @c NULL on failure.
  *
  * This function creates a new hash table using user-defined callbacks
@@ -382,8 +382,8 @@ EAPI Eina_Hash *eina_hash_new(Eina_Key_Length key_length_cb,
 /**
  * @brief Sets the data cleanup callback for a hash.
  *
- * @param hash The given hash table.
- * @param data_free_cb The function called on each value when the hash
+ * @param[in,out] hash The given hash table.
+ * @param[in] data_free_cb The function called on each value when the hash
  * table is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback to remove an existing callback.
  *
@@ -398,7 +398,7 @@ EAPI void eina_hash_free_cb_set(Eina_Hash *hash, Eina_Free_Cb data_free_cb) EINA
 /**
  * @brief Creates a new hash table using the djb2 algorithm.
  *
- * @param data_free_cb The function called on each value when the hash table
+ * @param[in] data_free_cb The function called on each value when the hash table
  * is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback.
  * @return The new hash table, or @c NULL on failure.
@@ -413,7 +413,7 @@ EAPI Eina_Hash *eina_hash_string_djb2_new(Eina_Free_Cb data_free_cb);
 /**
  * @brief Creates a new hash table for use with strings.
  *
- * @param data_free_cb The function called on each value when the hash table
+ * @param[in] data_free_cb The function called on each value when the hash table
  * is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback.
  * @return The new hash table, or @c NULL on failure.
@@ -432,7 +432,7 @@ EAPI Eina_Hash *eina_hash_string_superfast_new(Eina_Free_Cb data_free_cb);
 /**
  * @brief Creates a new hash table for use with strings with small bucket size.
  *
- * @param data_free_cb  The function called on each value when the hash table
+ * @param[in] data_free_cb  The function called on each value when the hash table
  * is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback.
  * @return The new hash table, or @c NULL on failure.
@@ -449,7 +449,7 @@ EAPI Eina_Hash *eina_hash_string_small_new(Eina_Free_Cb data_free_cb);
 /**
  * @brief Creates a new hash table for use with 32bit integers.
  *
- * @param data_free_cb  The function called on each value when the hash table
+ * @param[in] data_free_cb  The function called on each value when the hash table
  * is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback.
  * @return  The new hash table, or @c NULL on failure.
@@ -467,7 +467,7 @@ EAPI Eina_Hash *eina_hash_int32_new(Eina_Free_Cb data_free_cb);
 /**
  * @brief Creates a new hash table for use with 64bit integers.
  *
- * @param data_free_cb  The function called on each value when the hash table
+ * @param[in] data_free_cb  The function called on each value when the hash table
  * is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback.
  * @return The new hash table, or @c NULL on failure.
@@ -484,7 +484,7 @@ EAPI Eina_Hash *eina_hash_int64_new(Eina_Free_Cb data_free_cb);
 /**
  * @brief Creates a new hash table for use with pointers.
  *
- * @param data_free_cb  The function called on each value when the hash table
+ * @param[in] data_free_cb  The function called on each value when the hash table
  * is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback.
  * @return The new hash table, or @c NULL on failure.
@@ -510,7 +510,7 @@ EAPI Eina_Hash *eina_hash_pointer_new(Eina_Free_Cb data_free_cb);
 /**
  * @brief Creates a new hash table optimized for stringshared values.
  *
- * @param data_free_cb  The function called on each value when the hash table
+ * @param[in] data_free_cb  The function called on each value when the hash table
  * is freed, or when an item is deleted from it. @c NULL can be passed as
  * callback.
  * @return  The new hash table, or @c NULL on failure.
@@ -535,9 +535,9 @@ EAPI Eina_Hash *eina_hash_stringshared_new(Eina_Free_Cb data_free_cb);
 /**
  * @brief Adds an entry to the given hash table.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key A unique key. Cannot be @c NULL.
- * @param data The data to associate with the string given by @p key. Cannot be @c
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key A unique key. Cannot be @c NULL.
+ * @param[in] data The data to associate with the string given by @p key. Cannot be @c
  * NULL.
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
@@ -562,9 +562,9 @@ EAPI Eina_Bool  eina_hash_add(Eina_Hash  *hash,
 /**
  * @brief Adds an entry to the given hash table without duplicating the string.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key A unique key. Cannot be @c NULL.
- * @param data The data to associate with the string given by @p
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key A unique key. Cannot be @c NULL.
+ * @param[in] data The data to associate with the string given by @p
  * key. Cannot be @c NULL
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
@@ -592,9 +592,9 @@ EAPI Eina_Bool eina_hash_direct_add(Eina_Hash  *hash,
  * @brief Removes the entry identified by a key or a data from the given
  * hash table.
  *
- * @param hash The given hash table.
- * @param key  The key.
- * @param data The data pointer to remove if the key is @c NULL.
+ * @param[in,out] hash The given hash table.
+ * @param[in] key  The key.
+ * @param[in] data The data pointer to remove if the key is @c NULL.
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
  * This function removes the entry identified by @p key or @p data
@@ -616,8 +616,8 @@ EAPI Eina_Bool eina_hash_del(Eina_Hash  *hash,
 /**
  * @brief Retrieves a specific entry in the given hash table.
  *
- * @param hash The given hash table.
- * @param key The key of the entry to find.
+ * @param[in] hash The given hash table.
+ * @param[in] key The key of the entry to find.
  * @return The data pointer for the stored entry on success, or @c NULL
  * otherwise.
  *
@@ -630,9 +630,9 @@ EAPI void *eina_hash_find(const Eina_Hash *hash,
 /**
  * @brief Modifies the entry pointer at the specified key and returns
  * the previous entry.
- * @param hash The given hash table.
- * @param key The key of the entry to modify.
- * @param data The new data.
+ * @param[in,out] hash The given hash table.
+ * @param[in] key The key of the entry to modify.
+ * @param[in] data The new data.
  * @return The data pointer for the previously stored entry on success,
  * or @c NULL otherwise.
  *
@@ -647,9 +647,9 @@ EAPI void *eina_hash_modify(Eina_Hash  *hash,
  * @brief Modifies the entry pointer at the specified key and returns the
  * previous entry or adds the entry if not found.
  *
- * @param hash The given hash table.
- * @param key The key of the entry to modify.
- * @param data The data to replace the previous entry.
+ * @param[in,out] hash The given hash table.
+ * @param[in] key The key of the entry to modify.
+ * @param[in] data The data to replace the previous entry.
  * @return The data pointer for the previous stored entry, or @c NULL
  * otherwise.
  *
@@ -665,9 +665,9 @@ EAPI void *eina_hash_set(Eina_Hash  *hash,
  * @brief Changes the key of an entry in a hash without triggering the
  * free callback.
  *
- * @param hash    The given hash table.
- * @param old_key The current key associated with the data.
- * @param new_key The new key to associate data with.
+ * @param[in,out] hash    The given hash table.
+ * @param[in] old_key The current key associated with the data.
+ * @param[in] new_key The new key to associate data with.
  * @return #EINA_FALSE in any case but success, #EINA_TRUE on success.
  *
  * This function moves data from one key to another,
@@ -681,7 +681,7 @@ EAPI Eina_Bool eina_hash_move(Eina_Hash  *hash,
 /**
  * @brief Frees the given hash table's resources.
  *
- * @param hash The hash table to be freed.
+ * @param[in] hash The hash table to be freed.
  *
  * This function frees memory allocated for the @p hash and to its
  * internal buckets.
@@ -706,7 +706,7 @@ EAPI void      eina_hash_free(Eina_Hash *hash) EINA_ARG_NONNULL(1);
 /**
  * @brief Frees the given hash table buckets resources.
  *
- * @param hash The hash table whose buckets have to be freed.
+ * @param[in] hash The hash table whose buckets have to be freed.
  *
  * This function frees memory allocated to internal buckets for @p hash.
  *
@@ -722,7 +722,7 @@ EAPI void      eina_hash_free_buckets(Eina_Hash *hash) EINA_ARG_NONNULL(1);
 /**
  * @brief Returns the number of entries in the given hash table.
  *
- * @param hash The given hash table.
+ * @param[in] hash The given hash table.
  * @return The number of entries in the hash table, or @c 0 on error or
  * if @p hash is @c NULL.
  */
@@ -731,11 +731,11 @@ EAPI int       eina_hash_population(const Eina_Hash *hash) EINA_ARG_NONNULL(1);
 /**
  * @brief Adds an entry to the given hash table by its key hash.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key A unique key. Cannot be @c NULL.
- * @param key_length The length of @p key (including terminating '\\0').
- * @param key_hash The hash of @p key.
- * @param data The data to associate with the string given by the key. Cannot be
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key A unique key. Cannot be @c NULL.
+ * @param[in] key_length The length of @p key (including terminating '\\0').
+ * @param[in] key_hash The hash of @p key.
+ * @param[in] data The data to associate with the string given by the key. Cannot be
  * @c NULL.
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
@@ -758,11 +758,11 @@ EAPI Eina_Bool eina_hash_add_by_hash(Eina_Hash  *hash,
 /**
  * @brief Adds an entry to a hash table by its key hash without duplicating the string key.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key A unique key. Cannot be @c NULL.
- * @param key_length The length of @p key (including terminating '\\0').
- * @param key_hash The hash of @p key.
- * @param data The data to associate with the string given by @p key. Cannot be @c
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key A unique key. Cannot be @c NULL.
+ * @param[in] key_length The length of @p key (including terminating '\\0').
+ * @param[in] key_hash The hash of @p key.
+ * @param[in] data The data to associate with the string given by @p key. Cannot be @c
  * NULL.
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
@@ -790,10 +790,10 @@ EAPI Eina_Bool eina_hash_direct_add_by_hash(Eina_Hash  *hash,
  * @brief Removes the entry identified by a key and a key hash from the given
  * hash table.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key The key. Cannot be @c NULL.
- * @param key_length The length of the key (including terminating '\\0').
- * @param key_hash The hash that always matches the key.
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key The key. Cannot be @c NULL.
+ * @param[in] key_length The length of the key (including terminating '\\0').
+ * @param[in] key_hash The hash that always matches the key.
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
  * This function removes the entry identified by @p key and
@@ -816,8 +816,8 @@ EAPI Eina_Bool eina_hash_del_by_key_hash(Eina_Hash  *hash,
  * This version will calculate key length and hash by using functions
  * provided to the hash creation function.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key  The key. Cannot be @c NULL.
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key  The key. Cannot be @c NULL.
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
  * This function removes the entry identified by @p key from @p
@@ -836,8 +836,8 @@ EAPI Eina_Bool eina_hash_del_by_key(Eina_Hash  *hash,
 /**
  * @brief Removes an entry from a hash table identified by its data value.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param data The data value to search and remove. Cannot be @c NULL.
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] data The data value to search and remove. Cannot be @c NULL.
  * @return #EINA_FALSE if an error occurred or if @p hash or @p data are
  * @c NULL, #EINA_TRUE otherwise.
  *          thing goes fine.
@@ -862,11 +862,11 @@ EAPI Eina_Bool eina_hash_del_by_data(Eina_Hash  *hash,
  * If @p key is @c NULL, then @p data is used to find a match to
  * remove.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key The key.
- * @param key_length The length of the key.
- * @param key_hash The hash that always match the key.
- * @param data The data pointer to remove if the key is @c NULL.
+ * @param[in,out] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key The key.
+ * @param[in] key_length The length of the key.
+ * @param[in] key_hash The hash that always match the key.
+ * @param[in] data The data pointer to remove if the key is @c NULL.
  * @return #EINA_FALSE if an error occurred, #EINA_TRUE otherwise.
  *
  * This function removes the entry identified by @p key and @p key_hash,
@@ -891,10 +891,10 @@ EAPI Eina_Bool eina_hash_del_by_hash(Eina_Hash  *hash,
 /**
  * @brief Retrieves a specific entry from the given hash table.
  *
- * @param hash The given hash table. Cannot be @c NULL.
- * @param key The key of the entry to find.
- * @param key_length The length of the key.
- * @param key_hash The hash that always matches the key
+ * @param[in] hash The given hash table. Cannot be @c NULL.
+ * @param[in] key The key of the entry to find.
+ * @param[in] key_length The length of the key.
+ * @param[in] key_hash The hash that always matches the key
  * @return The data pointer for the stored entry on success, or @c NULL
  * if @p hash is @c NULL or if the data pointer could not be retrieved.
  *
@@ -912,13 +912,13 @@ EAPI void *eina_hash_find_by_hash(const Eina_Hash *hash,
  * @brief Modifies the entry pointer at the specified key and returns
  * the previous entry.
  *
- * @param hash The given hash table.
- * @param key The key of the entry to modify.
- * @param key_length Should be the length of @p key (don't forget to count
+ * @param[in,out] hash The given hash table.
+ * @param[in] key The key of the entry to modify.
+ * @param[in] key_length Should be the length of @p key (don't forget to count
  * '\\0' for string).
- * @param key_hash The hash that always matches the key. Ignored if @p
+ * @param[in] key_hash The hash that always matches the key. Ignored if @p
  * key is @c NULL.
- * @param data The data to replace the current entry, if it exists.
+ * @param[in] data The data to replace the current entry, if it exists.
  * @return The data pointer for the previously stored entry, or @c NULL
  * if not found. If an existing entry is not found, nothing is added to
  * the hash.
@@ -932,7 +932,7 @@ EAPI void *eina_hash_modify_by_hash(Eina_Hash  *hash,
 /**
  * @brief Returns a new iterator associated with hash keys.
  *
- * @param hash The hash.
+ * @param[in] hash The hash.
  * @return A new iterator, or @c NULL if memory could not be allocated.
  *
  * This function returns a newly allocated iterator associated with @p
@@ -948,7 +948,7 @@ EAPI Eina_Iterator *eina_hash_iterator_key_new(const Eina_Hash *hash) EINA_MALLO
 /**
  * @brief Returns a new iterator associated with a hash.
  *
- * @param hash The hash.
+ * @param[in] hash The hash.
  * @return A new iterator, or @c NULL if memory could not be allocated.
  *
  * This function returns a newly allocated iterator associated with
@@ -964,7 +964,7 @@ EAPI Eina_Iterator *eina_hash_iterator_data_new(const Eina_Hash *hash) EINA_MALL
 /**
  * @brief Returned a new iterator associated with hash keys and data.
  *
- * @param hash The hash.
+ * @param[in] hash The hash.
  * @return A new iterator, or @c NULL if memory could not be allocated.
  *
  * This function returns a newly allocated iterator associated with @p
@@ -983,9 +983,9 @@ EAPI Eina_Iterator *eina_hash_iterator_tuple_new(const Eina_Hash *hash) EINA_MAL
 /**
  * @brief Calls a function on every member stored in the hash table.
  *
- * @param hash The hash table whose members will be walked.
- * @param func The function to call on each parameter.
- * @param fdata The data pointer to pass to the function being called.
+ * @param[in] hash The hash table whose members will be walked.
+ * @param[in] func The function to call on each parameter.
+ * @param[in] fdata The data pointer to pass to the function being called.
  *
  * This function iterates over the hash table @p hash, calling the
  * function @p func on each member. If @p func modifies the contents
@@ -1026,33 +1026,41 @@ EAPI void           eina_hash_foreach(const Eina_Hash  *hash,
  * This function is identical to the sequence of calling
  * eina_hash_find(), eina_list_append(), eina_hash_set(),
  * but with one fewer required hash lookup.
- * @param hash The hash table.
- * @param key The key associated with the data.
- * @param data The data to append to the list.
+ *
+ * @param[in,out] hash The hash table.
+ * @param[in] key The key associated with the data.
+ * @param[in] data The data to append to the list.
+ *
  * @since 1.10
  */
 EAPI void eina_hash_list_append(Eina_Hash *hash, const void *key, const void *data) EINA_ARG_NONNULL(1, 2, 3);
+
 /**
  * @brief Prepends data to an #Eina_List inside a hash.
  *
  * This function is identical to the sequence of calling
  * eina_hash_find(), eina_list_prepend(), eina_hash_set(),
  * but with one fewer required hash lookup.
- * @param hash The hash table.
- * @param key The key associated with the data.
- * @param data The data to prepend to the list.
+ *
+ * @param[in,out] hash The hash table.
+ * @param[in] key The key associated with the data.
+ * @param[in] data The data to prepend to the list.
+ *
  * @since 1.10
  */
 EAPI void eina_hash_list_prepend(Eina_Hash *hash, const void *key, const void *data) EINA_ARG_NONNULL(1, 2, 3);
+
 /**
  * @brief Removes data from an #Eina_List inside a hash.
  *
  * This function is identical to the sequence of calling
  * eina_hash_find(), eina_list_remove(), eina_hash_set(),
  * but with one fewer required hash lookup.
- * @param hash The hash table.
- * @param key The key associated with the data.
- * @param data The data to remove from the list.
+ *
+ * @param[in,out] hash The hash table.
+ * @param[in] key The key associated with the data.
+ * @param[in] data The data to remove from the list.
+ *
  * @since 1.10
  */
 EAPI void eina_hash_list_remove(Eina_Hash *hash, const void *key, const void *data) EINA_ARG_NONNULL(1, 2, 3);
@@ -1061,8 +1069,8 @@ EAPI void eina_hash_list_remove(Eina_Hash *hash, const void *key, const void *da
  * @brief
  * Paul Hsieh (http://www.azillionmonkeys.com/qed/hash.html) hash function used by WebCore (http://webkit.org/blog/8/hashtables-part-2/)
  *
- * @param key The key to hash.
- * @param len The length of the key.
+ * @param[in] key The key to hash.
+ * @param[in] len The length of the key.
  * @return The hash value.
  */
 EAPI int eina_hash_superfast(const char *key,
@@ -1072,8 +1080,8 @@ EAPI int eina_hash_superfast(const char *key,
  * @brief
  * Hash function first reported by Dan Bernstein many years ago in comp.lang.c
  *
- * @param key The key to hash.
- * @param len The length of the key.
+ * @param[in] key The key to hash.
+ * @param[in] len The length of the key.
  * @return The hash value.
  */
 static inline int eina_hash_djb2(const char *key,
@@ -1083,8 +1091,8 @@ static inline int eina_hash_djb2(const char *key,
  * @brief
  * Hash function first reported by Dan Bernstein many years ago in comp.lang.c
  *
- * @param key The key to hash.
- * @param plen The length of the key.
+ * @param[in] key The key to hash.
+ * @param[in] plen The length of the key.
  * @return The hash value.
  */
 static inline int eina_hash_djb2_len(const char *key,
@@ -1094,8 +1102,8 @@ static inline int eina_hash_djb2_len(const char *key,
  * @brief
  * Hash function from http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm
  *
- * @param pkey The key to hash.
- * @param len The length of the key.
+ * @param[in] pkey The key to hash.
+ * @param[in] len The length of the key.
  * @return The hash value.
  */
 static inline int eina_hash_int32(const unsigned int *pkey,
@@ -1105,8 +1113,8 @@ static inline int eina_hash_int32(const unsigned int *pkey,
  * @brief
  * Hash function from http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm
  *
- * @param pkey The key to hash.
- * @param len The length of the key.
+ * @param[in] pkey The key to hash.
+ * @param[in] len The length of the key.
  * @return The hash value.
  */
 static inline int eina_hash_int64(const unsigned long long int *pkey,
@@ -1116,8 +1124,8 @@ static inline int eina_hash_int64(const unsigned long long int *pkey,
  * @brief
  * Hash function from http://sites.google.com/site/murmurhash/
  *
- * @param key The key to hash.
- * @param len The length of the key.
+ * @param[in] key The key to hash.
+ * @param[in] len The length of the key.
  * @return The hash value.
  */
 static inline int eina_hash_murmur3(const char *key,
@@ -1127,8 +1135,8 @@ static inline int eina_hash_murmur3(const char *key,
  * @brief
  * Hash function using crc-32 algorithm and and 0xEDB88320 polynomial
  *
- * @param key The key to hash.
- * @param len The length of the key.
+ * @param[in] key The key to hash.
+ * @param[in] len The length of the key.
  * @return The hash value.
  */
 static inline int eina_hash_crc(const char *key,
diff --git a/src/lib/eina/eina_lalloc.h b/src/lib/eina/eina_lalloc.h
index 114d0a9eae..bb14a7163c 100644
--- a/src/lib/eina/eina_lalloc.h
+++ b/src/lib/eina/eina_lalloc.h
@@ -39,9 +39,10 @@
  *
  */
 typedef Eina_Bool (*Eina_Lalloc_Alloc)(void *user_data, int num);
+
 /**
  * @def EINA_LALLOC_ALLOC
- * @param function The function to allocate.
+ * @param[in] function The function to allocate.
  */
 #define EINA_LALLOC_ALLOC(function) ((Eina_Lalloc_Alloc)function)
 
diff --git a/src/lib/eina/eina_matrix.h b/src/lib/eina/eina_matrix.h
index ade4249b04..ed12f6f0db 100644
--- a/src/lib/eina/eina_matrix.h
+++ b/src/lib/eina/eina_matrix.h
@@ -421,7 +421,7 @@ EAPI void eina_matrix3_identity(Eina_Matrix3 *t);
 /**
  * @brief Calculates the determinant of the given matrix.
  *
- * @param m[in] The matrix.
+ * @param[in] m The matrix.
  * @return The determinant.
  *
  * This function returns the determinant of the matrix @p m. No check
diff --git a/src/lib/eina/eina_promise.h b/src/lib/eina/eina_promise.h
index 769e02233e..1a142208b8 100644
--- a/src/lib/eina/eina_promise.h
+++ b/src/lib/eina/eina_promise.h
@@ -149,7 +149,7 @@ struct _Eina_Future_Scheduler {
     *
     * @note Must not be @c NULL.
     *
-    * @param entry The scheduled event to cancel
+    * @param[in,out] entry The scheduled event to cancel
     */
    void (*recall)(Eina_Future_Schedule_Entry *entry);
 };
@@ -1196,7 +1196,7 @@ EAPI Eina_Future_Desc eina_future_cb_console_from_desc(const Eina_Future_Cb_Cons
  * next future in the chain.
  *
  * @param[in] err The error to be ignored.
- * @param A future descriptor to be used with eina_future_then() or eina_future_chain()
+ * @return A future descriptor to be used with eina_future_then() or eina_future_chain()
  */
 EAPI Eina_Future_Desc eina_future_cb_ignore_error(Eina_Error err);
 
diff --git a/src/lib/eina/eina_slstr.h b/src/lib/eina/eina_slstr.h
index 881276f615..ce93e23b78 100644
--- a/src/lib/eina/eina_slstr.h
+++ b/src/lib/eina/eina_slstr.h
@@ -36,7 +36,7 @@ typedef const char Eina_Slstr;
 /**
  * @brief Create a new short lived string by duplicating another string.
  *
- * @param string An existing string, it will be copied.
+ * @param[in] string An existing string, it will be copied.
  * @return A new Eina_Slstr or NULL if out of memory.
  *
  * Usage example:
@@ -54,7 +54,7 @@ eina_slstr_copy_new(const char *string);
 /**
  * @brief Create a new short lived string by taking ownership of a string.
  *
- * @param string An existing string. It will not be duplicated.
+ * @param[in] string An existing string. It will not be duplicated.
  * @return A new Eina_Slstr or NULL if out of memory.
  *
  * Usage example:
@@ -71,7 +71,7 @@ eina_slstr_steal_new(char *string);
 /**
  * @brief Create a new short lived string by taking ownership of a stringshare.
  *
- * @param string An existing stringshare, one reference belongs to this slstr.
+ * @param[in] string An existing stringshare, one reference belongs to this slstr.
  * @return A new Eina_Slstr or NULL if out of memory.
  *
  * Usage example:
@@ -88,7 +88,7 @@ eina_slstr_stringshare_new(Eina_Stringshare *string);
 /**
  * @brief Create a new short lived string by taking ownership of a tmpstr.
  *
- * @param string An existing tmpstr, it will be freed later.
+ * @param[in] string An existing tmpstr, it will be freed later.
  * @return A new Eina_Slstr or NULL if out of memory.
  *
  * Usage example:
@@ -105,7 +105,7 @@ eina_slstr_tmpstr_new(Eina_Tmpstr *string);
 /**
  * @brief Create a new short lived string by taking ownership of a strbuf.
  *
- * @param string An existing strbuf, that will be released (i.e.. steal + free).
+ * @param[in] string An existing strbuf, that will be released (i.e.. steal + free).
  * @return A new Eina_Slstr or NULL if out of memory.
  *
  * Usage example:
@@ -126,8 +126,8 @@ eina_slstr_strbuf_new(Eina_Strbuf *string);
 /**
  * @brief Create a new short lived string using sprintf.
  *
- * @param fmt Format string for printf
- * @param args List of format parameters for printf
+ * @param[in] fmt Format string for printf
+ * @param[in] args List of format parameters for printf
  * @return A new Eina_Slstr or NULL if out of memory.
  *
  * @since 1.19
@@ -138,8 +138,8 @@ eina_slstr_vasprintf_new(const char *fmt, va_list args);
 /**
  * @brief Create a new short lived string using sprintf.
  *
- * @param fmt Format string for printf
- * @param args List of format parameters for printf
+ * @param[in] fmt Format string for printf
+ * @param[in] args List of format parameters for printf
  * @return A new Eina_Slstr or NULL if out of memory.
  *
  * Usage example:
diff --git a/src/lib/eina/eina_str.h b/src/lib/eina/eina_str.h
index 742c02be55..e8bf685067 100644
--- a/src/lib/eina/eina_str.h
+++ b/src/lib/eina/eina_str.h
@@ -85,9 +85,9 @@
 /**
  * @brief Copies a c-string to another.
  *
- * @param dst The destination string.
- * @param src The source string.
- * @param siz The size of the destination string.
+ * @param[out] dst The destination string.
+ * @param[in] src The source string.
+ * @param[in] siz The size of the destination string.
  * @return The length of the source string.
  *
  * This function copies up to @p siz - 1 characters from the
@@ -105,9 +105,9 @@ EAPI size_t          eina_strlcpy(char *dst, const char *src, size_t siz) EINA_A
 /**
  * @brief Appends a c-string.
  *
- * @param dst The destination string.
- * @param src The source string.
- * @param siz The size of the destination string.
+ * @param[out] dst The destination string.
+ * @param[in] src The source string.
+ * @param[in] siz The size of the destination string.
  * @return The length of the source string plus MIN(siz, strlen(initial dst))
  *
  * This function appends @p src to @p dst of size @p siz (unlike
@@ -123,8 +123,8 @@ EAPI size_t          eina_strlcat(char *dst, const char *src, size_t siz) EINA_A
 /**
  * @brief Checks if the given string has the given prefix.
  *
- * @param str The string to work with.
- * @param prefix The prefix to check for.
+ * @param[in] str The string to work with.
+ * @param[in] prefix The prefix to check for.
  * @return #EINA_TRUE if the string has the given prefix, #EINA_FALSE otherwise.
  *
  * This function returns #EINA_TRUE if @p str has the prefix
@@ -136,8 +136,8 @@ EAPI Eina_Bool       eina_str_has_prefix(const char *str, const char *prefix) EI
 /**
  * @brief Checks if the given string has the given suffix.
  *
- * @param str The string to work with.
- * @param suffix The suffix to check for.
+ * @param[in] str The string to work with.
+ * @param[in] suffix The suffix to check for.
  * @return #EINA_TRUE if the string has the given suffix, #EINA_FALSE otherwise.
  *
  * This function returns #EINA_TRUE if @p str has the suffix
@@ -149,8 +149,8 @@ EAPI Eina_Bool       eina_str_has_suffix(const char *str, const char *suffix) EI
 /**
  * @brief Checks if the given string has the given extension.
  *
- * @param str The string to work with.
- * @param ext The  extension to check for.
+ * @param[in] str The string to work with.
+ * @param[in] ext The  extension to check for.
  * @return #EINA_TRUE if the string has the given extension, #EINA_FALSE otherwise.
  *
  * This function does the same as eina_str_has_suffix(), except it's case
@@ -161,9 +161,9 @@ EAPI Eina_Bool       eina_str_has_extension(const char *str, const char *ext) EI
 /**
  * @brief Splits a string using a delimiter.
  *
- * @param string The string to split.
- * @param delimiter The string which specifies the places at which to split the string.
- * @param max_tokens The maximum number of strings to split string into, or a number less
+ * @param[in] string The string to split.
+ * @param[in] delimiter The string which specifies the places at which to split the string.
+ * @param[in] max_tokens The maximum number of strings to split string into, or a number less
  *                   than 1 to split as many times as possible. This parameter
  *                   IGNORES the added @c NULL terminator.
  * @return A newly-allocated NULL-terminated array of strings or @c NULL if it
@@ -187,12 +187,12 @@ EAPI char          **eina_str_split(const char *string, const char *delimiter, i
 /**
  * @brief Splits a string using a delimiter and returns number of elements.
  *
- * @param string The string to split.
- * @param delimiter The string which specifies the places at which to split the string.
- * @param max_tokens The maximum number of strings to split string into, or a number less
+ * @param[in] string The string to split.
+ * @param[in] delimiter The string which specifies the places at which to split the string.
+ * @param[in] max_tokens The maximum number of strings to split string into, or a number less
  *                   than 1 to split as many times as possible. This parameter
  *                   IGNORES the added @c NULL terminator.
- * @param elements Where to return the number of elements in returned
+ * @param[out] elements Where to return the number of elements in returned
  *        array. This array is guaranteed to be no greater than @p max_tokens, and
  *        it will NOT count the @c NULL terminator element.
  * @return A newly-allocated NULL-terminated array of strings or @c NULL if it
@@ -221,13 +221,13 @@ EAPI char          **eina_str_split_full(const char *string, const char *delimit
 /**
  * @brief Joins two strings of known length.
  *
- * @param dst The buffer to store the result.
- * @param size Size (in byte) of the buffer.
- * @param sep The separator character to use.
- * @param a First string to use, before @p sep.
- * @param a_len Length of @p a.
- * @param b Second string to use, after @p sep.
- * @param b_len Length of @p b.
+ * @param[out] dst The buffer to store the result.
+ * @param[in] size Size (in byte) of the buffer.
+ * @param[in] sep The separator character to use.
+ * @param[in] a First string to use, before @p sep.
+ * @param[in] a_len Length of @p a.
+ * @param[in] b Second string to use, after @p sep.
+ * @param[in] b_len Length of @p b.
  * @return The number of characters printed.
  *
  * This function joins the strings @p a and @p b (in that order) and
@@ -250,9 +250,9 @@ EAPI size_t          eina_str_join_len(char *dst, size_t size, char sep, const c
 /**
  * @brief Uses Iconv to convert a text string from one encoding to another.
  *
- * @param enc_from Encoding to convert from.
- * @param enc_to Encoding to convert to.
- * @param text The text to convert.
+ * @param[in] enc_from Encoding to convert from.
+ * @param[in] enc_to Encoding to convert to.
+ * @param[in] text The text to convert.
  * @return The converted text.
  *
  * This function converts @p text, encoded in @p enc_from. On success,
@@ -269,11 +269,11 @@ EAPI char           *eina_str_convert(const char *enc_from, const char *enc_to,
 /**
  * @brief Uses Iconv to convert a text string from one encoding to another.
  *
- * @param enc_from Encoding to convert from.
- * @param enc_to Encoding to convert to.
- * @param text The text to convert.
- * @param len The size in bytes of the text to convert.
- * @param retlen The size in bytes of the converted text.
+ * @param[in] enc_from Encoding to convert from.
+ * @param[in] enc_to Encoding to convert to.
+ * @param[in] text The text to convert.
+ * @param[in] len The size in bytes of the text to convert.
+ * @param[in] retlen The size in bytes of the converted text.
  * @return The converted text.
  *
  * This function converts @p text, encoded in @p enc_from. On success,
@@ -290,7 +290,7 @@ EAPI char           *eina_str_convert_len(const char *enc_from, const char *enc_
 /**
  * @brief Escapes slashes, spaces and apostrophes in strings.
  *
- * @param str The string to escape.
+ * @param[in] str The string to escape.
  * @return The escaped string.
  *
  * Escaping is done by adding a slash "\" before any occurrence of slashes "\"
@@ -305,7 +305,7 @@ EAPI char           *eina_str_escape(const char *str) EINA_WARN_UNUSED_RESULT EI
 /**
  * @brief Lowercases all the characters in range [A-Z] in the given string.
  *
- * @param str The string to lowercase.
+ * @param[in,out] str The string to lowercase.
  *
  * This function modifies the original string, changing all characters
  * in [A-Z] to lowercase. If @p str is @c NULL or is an empty string,
@@ -316,7 +316,7 @@ EAPI void            eina_str_tolower(char **str);
 /**
  * @brief Uppercases all the characters in range [a-z] in the given string.
  *
- * @param str The string to uppercase.
+ * @param[in,out] str The string to uppercase.
  *
  * This function modifies the original string, changing all characters
  * in [a-z] to uppercase. If @p str is @c NULL or is an empty string,
@@ -330,10 +330,10 @@ static inline size_t eina_str_join(char *dst, size_t size, char sep, const char
  * @def eina_str_join_static(dst, sep, a, b)
  * @brief Joins two static strings and store the result in a static buffer.
  *
- * @param dst The buffer to store the result.
- * @param sep The separator character to use.
- * @param a First string to use, before @p sep.
- * @param b Second string to use, after @p sep.
+ * @param[out] dst The buffer to store the result.
+ * @param[in] sep The separator character to use.
+ * @param[in] a First string to use, before @p sep.
+ * @param[in] b Second string to use, after @p sep.
  * @return The number of characters printed.
  *
  * This function is similar to eina_str_join_len(), but will assume
@@ -348,9 +348,9 @@ static inline size_t eina_strlen_bounded(const char *str, size_t maxlen) EINA_PU
 
 /**
  * @brief Memory duplication function with optional termination for strings
- * @param mem The memory to copy
- * @param size The size of @p mem
- * @param terminate If true, the returned memory will be nul terminated with '\0'
+ * @param[in] mem The memory to copy
+ * @param[in] size The size of @p mem
+ * @param[in] terminate If true, the returned memory will be nul terminated with '\0'
  * @return The copied memory, must be freed
  * @since 1.13
  */
@@ -359,8 +359,8 @@ EAPI unsigned char *eina_memdup(unsigned char *mem, size_t size, Eina_Bool termi
 /**
  * @brief Creates and update the buffer based on strftime output.
  *
- * @param tm Pointer to a tm structure needed by strftime.
- * @param format String containing format specifiers needed by strftime.
+ * @param[in] tm Pointer to a tm structure needed by strftime.
+ * @param[in] format String containing format specifiers needed by strftime.
  * @return Updated buffer based on strftime output
  *
  * This will create a buffer of exact required size based on strftime output
diff --git a/src/lib/eina/eina_stringshare.h b/src/lib/eina/eina_stringshare.h
index 3c4b836486..ccb865075f 100644
--- a/src/lib/eina/eina_stringshare.h
+++ b/src/lib/eina/eina_stringshare.h
@@ -178,8 +178,8 @@ typedef const char Eina_Stringshare;
  * @brief Retrieves an instance of a string with a specific size for use in a
  * program.
  *
- * @param   str The string to retrieve an instance of.
- * @param   slen The string size (<= strlen(str)).
+ * @param[in] str The string to retrieve an instance of.
+ * @param[in] slen The string size (<= strlen(str)).
  * @return  A pointer to an instance of the string on success,
  *          @c NULL on failure.
  *
@@ -199,7 +199,7 @@ EAPI Eina_Stringshare  *eina_stringshare_add_length(const char *str, unsigned in
 /**
  * @brief Retrieves an instance of a string for use in a program.
  *
- * @param   str The NULL-terminated string to retrieve an instance of.
+ * @param[in] str The NULL-terminated string to retrieve an instance of.
  * @return  A pointer to an instance of the string on success,
  *          @c NULL on failure.
  *
@@ -220,7 +220,7 @@ EAPI Eina_Stringshare  *eina_stringshare_add(const char *str) EINA_WARN_UNUSED_R
  * @brief Retrieves an instance of a string for use in a program
  * from a format string.
  *
- * @param   fmt The NULL-terminated format string to retrieve an instance of.
+ * @param[in] fmt The NULL-terminated format string to retrieve an instance of.
  * @return  A pointer to an instance of the string on success,
  *          @c NULL on failure.
  *
@@ -241,8 +241,8 @@ EAPI Eina_Stringshare  *eina_stringshare_printf(const char *fmt, ...) EINA_WARN_
  * @brief Retrieves an instance of a string for use in a program
  * from a format string.
  *
- * @param   fmt The NULL-terminated format string to retrieve an instance of.
- * @param   args The va_args for @p fmt
+ * @param[in] fmt The NULL-terminated format string to retrieve an instance of.
+ * @param[in] args The va_args for @p fmt
  * @return  A pointer to an instance of the string on success,
  *          @c NULL on failure.
  *
@@ -262,8 +262,9 @@ EAPI Eina_Stringshare  *eina_stringshare_vprintf(const char *fmt, va_list args)
 /**
  * @brief Retrieves an instance of a string for use in a program
  * from a format string with size limitation.
- * @param   len The length of the format string to use
- * @param   fmt The format string to retrieve an instance of.
+ *
+ * @param[in] len The length of the format string to use
+ * @param[in] fmt The format string to retrieve an instance of.
  * @return  A pointer to an instance of the string on success,
  *          @c NULL on failure.
  *
@@ -282,7 +283,7 @@ EAPI Eina_Stringshare  *eina_stringshare_nprintf(unsigned int len, const char *f
 /**
  * Increment references of the given shared string.
  *
- * @param str The shared string.
+ * @param[in,out] str The shared string.
  * @return    A pointer to an instance of the string on success,
  *            @c NULL on failure.
  *
@@ -298,7 +299,7 @@ EAPI Eina_Stringshare  *eina_stringshare_ref(Eina_Stringshare *str);
 /**
  * @brief Notes that the given string has lost an instance.
  *
- * @param str String the given string.
+ * @param[in,out] str String the given string.
  *
  * This function decreases the reference counter associated to @p str
  * if it exists. If that counter reaches 0, the memory associated to
@@ -313,7 +314,7 @@ EAPI void               eina_stringshare_del(Eina_Stringshare *str);
 /**
  * @brief Notes that the given string @b must be shared.
  *
- * @param str The shared string to know the length. It is safe to
+ * @param[in] str The shared string to know the length. It is safe to
  *        give @c NULL, in that case @c 0 is returned.
  * @return The length of a shared string.
  *
diff --git a/src/lib/eina/eina_thread.h b/src/lib/eina/eina_thread.h
index 076a36d247..15e522fc4c 100644
--- a/src/lib/eina/eina_thread.h
+++ b/src/lib/eina/eina_thread.h
@@ -77,8 +77,8 @@ EAPI Eina_Thread eina_thread_self(void) EINA_WARN_UNUSED_RESULT;
 
 /**
  * @brief Checks if two thread identifiers are the same.
- * @param t1 first thread identifier to compare.
- * @param t2 second thread identifier to compare.
+ * @param[in] t1 first thread identifier to compare.
+ * @param[in] t2 second thread identifier to compare.
  * @return #EINA_TRUE if they are equal, #EINA_FALSE otherwise.
  * @since 1.8
  */
@@ -88,10 +88,10 @@ EAPI Eina_Bool eina_thread_equal(Eina_Thread t1, Eina_Thread t2) EINA_WARN_UNUSE
  * @brief Creates a new thread, setting its priority and affinity.
  *
  * @param[out] t where to return the thread identifier. Must @b not be @c NULL.
- * @param prio thread priority to use, usually EINA_THREAD_BACKGROUND
- * @param affinity thread affinity to use. To not set affinity use @c -1.
- * @param func function to run in the thread. Must @b not be @c NULL.
- * @param data context data to provide to @a func as first argument.
+ * @param[in] prio thread priority to use, usually EINA_THREAD_BACKGROUND
+ * @param[in] affinity thread affinity to use. To not set affinity use @c -1.
+ * @param[in] func function to run in the thread. Must @b not be @c NULL.
+ * @param[in] data context data to provide to @a func as first argument.
  * @return #EINA_TRUE if thread was created, #EINA_FALSE on errors.
  * @since 1.8
  */
@@ -121,7 +121,7 @@ EAPI extern const void *EINA_THREAD_JOIN_CANCELED;
  * and may be @c NULL on errors. See @ref Eina_Error_Group to identify
  * problems.
  *
- * @param t thread identifier to wait.
+ * @param[in] t thread identifier to wait.
  * @return value returned by @a t creation function @c func() or
  *         @c NULL on errors. Check error with @ref Eina_Error_Group.
  *         If the thread was canceled, it will return
@@ -139,8 +139,8 @@ EAPI void *eina_thread_join(Eina_Thread t);
  * for debugging to name a thread so external tools can display a
  * meaningful name attached to the thread.
  *
- * @param t thread to set the name of
- * @param name a string to name the thread - this cannot be NULL
+ * @param[in] t thread to set the name of
+ * @param[in] name a string to name the thread - this cannot be NULL
  * @return EINA_TRUE if it succeeds in setting the name or EINA_FALSE
  *         otherwise.
  * @since 1.16
@@ -160,7 +160,7 @@ EAPI Eina_Bool eina_thread_name_set(Eina_Thread t, const char *name);
  * A thread that was canceled will return EINA_THREAD_JOIN_CANCELED
  * when eina_thread_join() is called.
  *
- * @param t Thread to cancel.
+ * @param[in] t Thread to cancel.
  *
  * @return EINA_FALSE if thread was not running, EINA_TRUE
  *         otherwise. Note that if a thread is not cancellable and it
@@ -189,10 +189,10 @@ EAPI Eina_Bool eina_thread_cancel(Eina_Thread t);
  * or the helper function eina_thread_cancellable_run() which does the
  * pair for you.
  *
- * @param cancellable If EINA_TRUE, this thread will be accept
+ * @param[in] cancellable If EINA_TRUE, this thread will be accept
  *        cancellation requests. If EINA_FALSE -- the default, it will
  *        ignore cancellation requests.
- * @param was_cancellable If non-NULL, will return the previous state,
+ * @param[in] was_cancellable If non-NULL, will return the previous state,
  *        shall you want to restore.
  *
  * @return EINA_TRUE if it succeeds in setting the cancellable state
@@ -246,8 +246,8 @@ EAPI void eina_thread_cancel_checkpoint(void);
  *       @b not be executed! To avoid problems prefer to use
  *       eina_thread_cancellable_run()!
  *
- * @param cleanup The function to execute on cancellation.
- * @param data The context to give to cleanup function.
+ * @param[in] cleanup The function to execute on cancellation.
+ * @param[in] data The context to give to cleanup function.
  *
  * @see eina_thread_cancellable_run()
  *
@@ -276,7 +276,7 @@ EAPI void eina_thread_cancel_checkpoint(void);
  *       @b not be executed even if exec_cleanup is EINA_TRUE! To
  *       avoid problems prefer to use eina_thread_cancellable_run()!
  *
- * @param exec_cleanup if EINA_TRUE, the function registered with
+ * @param[in] exec_cleanup if EINA_TRUE, the function registered with
  *        EINA_THREAD_CLEANUP_PUSH() will be executed.
  *
  * @see eina_thread_cancellable_run()
@@ -320,16 +320,16 @@ typedef void *(*Eina_Thread_Cancellable_Run_Cb)(void *data);
  *    return ret;
  * @endcode
  *
- * @param cb a cancellable callback to possibly run. The callback @b
+ * @param[in] cb a cancellable callback to possibly run. The callback @b
  *        may not be executed if the thread had a pending cancellation
  *        request. During its execution the callback may be canceled
  *        at explicit cancellation points using
  *        eina_thread_cancel_checkpoint(), as well as some syscalls
  *        defined in man:pthreads(7).
- * @param cleanup_cb a cleanup callback to be executed regardless of
+ * @param[in] cleanup_cb a cleanup callback to be executed regardless of
  *        the thread being canceled or not. This function will be
  *        executed even if @a cb wasn't.
- * @param data context to give to both @a cb and @a cleanup_cb.
+ * @param[in] data context to give to both @a cb and @a cleanup_cb.
  *
  * @return the return value of @a cb. If the thread was canceled,
  *         this function will not return.
diff --git a/src/lib/eina/eina_thread_queue.h b/src/lib/eina/eina_thread_queue.h
index 4009a0efb5..dd8f90d455 100644
--- a/src/lib/eina/eina_thread_queue.h
+++ b/src/lib/eina/eina_thread_queue.h
@@ -83,7 +83,7 @@ eina_thread_queue_new(void);
  * on messages or sending them. Any pending messages will be freed without
  * being processed by a listener.
  *
- * @param thq The thread queue to free
+ * @param[in] thq The thread queue to free
  *
  * @since 1.11
  */
@@ -93,9 +93,9 @@ eina_thread_queue_free(Eina_Thread_Queue *thq) EINA_ARG_NONNULL(1);
 /**
  * @brief Allocates a message to send down a thread queue.
  *
- * @param thq The thread queue to allocate the message on
- * @param size The size, in bytes, of the message, including standard header
- * @param allocref A pointer to store a general reference handle for the message
+ * @param[in,out] thq The thread queue to allocate the message on
+ * @param[in] size The size, in bytes, of the message, including standard header
+ * @param[out] allocref A pointer to store a general reference handle for the message
  * @return A pointer to the message data to fill in
  *
  * This allocates space for a new message on the message queue, but does not
@@ -112,8 +112,8 @@ eina_thread_queue_send(Eina_Thread_Queue *thq, int size, void **allocref) EINA_A
 /**
  * @brief Finishes sending the allocated message.
  *
- * @param thq The thread queue the message was placed on
- * @param allocref The allocref returned by eina_thread_queue_send()
+ * @param[in,out] thq The thread queue the message was placed on
+ * @param[in,out] allocref The allocref returned by eina_thread_queue_send()
  *
  * This completes the send and triggers the thread queue to wake up any
  * listeners.
@@ -126,8 +126,8 @@ eina_thread_queue_send_done(Eina_Thread_Queue *thq, void *allocref) EINA_ARG_NON
 /**
  * @brief Fetches a message from a thread queue.
  *
- * @param thq The thread queue to fetch the message from
- * @param allocref A pointer to store a general reference handle for the message
+ * @param[in,out] thq The thread queue to fetch the message from
+ * @param[out] allocref A pointer to store a general reference handle for the message
  * @return A pointer to the message data
  *
  * This will fetch the next message to read from the thread queue and return
@@ -146,8 +146,8 @@ eina_thread_queue_wait(Eina_Thread_Queue *thq, void **allocref) EINA_ARG_NONNULL
 /**
  * @brief Finishes fetching a message from a thread queue.
  *
- * @param thq The thread queue the message was fetched from
- * @param allocref The allocref returned by eina_thread_queue_wait()
+ * @param[in,out] thq The thread queue the message was fetched from
+ * @param[in,out] allocref The allocref returned by eina_thread_queue_wait()
  *
  * This should be used after eina_thread_queue_wait() or
  * eina_thread_queue_poll() to indicate the caller is done with the message.
@@ -160,8 +160,8 @@ eina_thread_queue_wait_done(Eina_Thread_Queue *thq, void *allocref) EINA_ARG_NON
 /**
  * @brief Fetches a message from a thread queue, but return immediately if there is none with NULL.
  *
- * @param thq The thread queue to fetch the message from
- * @param allocref A pointer to store a general reference handle for the message
+ * @param[in,out] thq The thread queue to fetch the message from
+ * @param[out] allocref A pointer to store a general reference handle for the message
  * @return A pointer to the message data
  *
  * This is the same as eina_thread_queue_wait(), but if no messages are
@@ -178,7 +178,7 @@ eina_thread_queue_poll(Eina_Thread_Queue *thq, void **allocref) EINA_ARG_NONNULL
 /**
  * @brief Gets the number of messages on a queue as yet unfetched.
  *
- * @param thq The thread queue to query for pending count
+ * @param[in] thq The thread queue to query for pending count
  * @return The number of messages waiting to be fetched
  *
  * This returns the number of messages waiting to be fetched with
@@ -192,8 +192,8 @@ eina_thread_queue_pending_get(const Eina_Thread_Queue *thq) EINA_ARG_NONNULL(1);
 /**
  * @brief Sets the parent of a thread queue (make this one a child).
  *
- * @param thq The thread queue to alter the parent of
- * @param thq_parent The new parent to set
+ * @param[in,out] thq The thread queue to alter the parent of
+ * @param[in] thq_parent The new parent to set
  *
  * This sets the parent queue where messages will be reported to. This is
  * how you can listen to multiple queues at once - set multiple queues to
@@ -209,7 +209,7 @@ eina_thread_queue_parent_set(Eina_Thread_Queue *thq, Eina_Thread_Queue *thq_pare
 /**
  * @brief Gets the parent of a thread queue.
  *
- * @param thq The thread queue to get the parent of
+ * @param[in] thq The thread queue to get the parent of
  * @return The parent thread queue
  *
  * This gets the parent set by eina_thread_queue_parent_get(). If no parent
@@ -225,8 +225,8 @@ eina_thread_queue_parent_get(const Eina_Thread_Queue *thq) EINA_ARG_NONNULL(1);
 /**
  * @brief Sets a file descriptor to write a byte to on a message send.
  *
- * @param thq The thread queue to set the file descriptor of
- * @param fd The fd to set, or -1 to unset it
+ * @param[in,out] thq The thread queue to set the file descriptor of
+ * @param[in] fd The fd to set, or -1 to unset it
  *
  * This sets a file descriptor to write to when a message is written to the
  * thread queue. This can be used to glue a thread queue to something like
@@ -245,7 +245,7 @@ eina_thread_queue_fd_set(Eina_Thread_Queue *thq, int fd) EINA_ARG_NONNULL(1);
 /**
  * @brief Gets the file descriptor written to on message sends.
  *
- * @param thq The thread queue to get the file descriptor of
+ * @param[in] thq The thread queue to get the file descriptor of
  * @return The file descriptor set (or -1 if none is set).
  *
  * This returns the file descriptor set by eina_thread_queue_fd_set() and
diff --git a/src/lib/eina/eina_tiler.h b/src/lib/eina/eina_tiler.h
index c6dd492d2f..28492efc4f 100644
--- a/src/lib/eina/eina_tiler.h
+++ b/src/lib/eina/eina_tiler.h
@@ -177,8 +177,8 @@ typedef struct _Eina_Tile_Grid_Slicer Eina_Tile_Grid_Slicer;
 /**
  * @brief Creates a new tiler with @p w width and @p h height.
  *
- * @param w Width of the tiler
- * @param h Height of the tiler
+ * @param[in] w Width of the tiler
+ * @param[in] h Height of the tiler
  * @return The newly created tiler
  *
  * @see eina_tiler_free()
@@ -188,7 +188,7 @@ EAPI Eina_Tiler        *eina_tiler_new(int w, int h);
 /**
  * @brief Frees a tiler.
  *
- * @param t The tiler to free.
+ * @param[in] t The tiler to free.
  *
  * This function frees @p t. It does not free the memory allocated for the
  * elements of @p t.
@@ -198,9 +198,9 @@ EAPI void               eina_tiler_free(Eina_Tiler *t);
 /**
  * @brief Sets the size of tiles for a tiler.
  *
- * @param t The tiler whose tile size will be set.
- * @param w Width of the tiles.
- * @param h Height of the tiles.
+ * @param[in,out] t The tiler whose tile size will be set.
+ * @param[in] w Width of the tiles.
+ * @param[in] h Height of the tiles.
  *
  * @warning @p w and @p h @b must be greater than zero, otherwise tile size
  * won't be changed.
@@ -211,9 +211,9 @@ EAPI void               eina_tiler_tile_size_set(Eina_Tiler *t, int w, int h);
 /**
  * @brief Changes the size of the area covered by the tiler.
  *
- * @param t The tiler whose area size will be set.
- * @param w Width of the area.
- * @param h Height of the area.
+ * @param[in,out] t The tiler whose area size will be set.
+ * @param[in] w Width of the area.
+ * @param[in] h Height of the area.
  *
  * @since 1.8
  *
@@ -224,9 +224,9 @@ EAPI void               eina_tiler_area_size_set(Eina_Tiler *t, int w, int h);
 /**
  * @brief Gets the size of the area covered by the tiler.
  *
- * @param t The tiler whose area size will be fetched.
- * @param w Width of the area.
- * @param h Height of the area.
+ * @param[in] t The tiler whose area size will be fetched.
+ * @param[out] w Width of the area.
+ * @param[out] h Height of the area.
  *
  * @since 1.8
  */
@@ -235,8 +235,8 @@ EAPI void               eina_tiler_area_size_get(const Eina_Tiler *t, int *w, in
 /**
  * @brief Defines if we need to follow a strict grid of tile or a loose one.
  *
- * @param t The tiler to apply the strict rules to.
- * @param strict Define if it will be strict or loose
+ * @param[in,out] t The tiler to apply the strict rules to.
+ * @param[in] strict Define if it will be strict or loose
  *
  * By default it will be loose.
  *
@@ -247,7 +247,7 @@ EAPI void               eina_tiler_strict_set(Eina_Tiler *t, Eina_Bool strict);
 /**
  * @brief Tells if a tiler is empty or not.
  *
- * @param t The tiler to apply the strict rules to.
+ * @param[in] t The tiler to apply the strict rules to.
  * @return #EINA_TRUE when empty, #EINA_FALSE when not.
  *
  * @since 1.8
@@ -257,8 +257,8 @@ EAPI Eina_Bool          eina_tiler_empty(const Eina_Tiler *t);
 /**
  * @brief Adds a rectangle to a tiler.
  *
- * @param t The tiler in which to add a container.
- * @param r The rectangle to be added.
+ * @param[in,out] t The tiler in which to add a container.
+ * @param[in] r The rectangle to be added.
  * @return #EINA_TRUE on success, #EINA_FALSE on failure.
  *
  * @see eina_tiler_rect_del()
@@ -268,8 +268,8 @@ EAPI Eina_Bool          eina_tiler_rect_add(Eina_Tiler *t, const Eina_Rectangle
 /**
  * @brief Removes a rectangle from a tiler.
  *
- * @param t The tiler in which to add a container.
- * @param r The rectangle to be removed.
+ * @param[in,out] t The tiler in which to add a container.
+ * @param[in] r The rectangle to be removed.
  *
  * @see eina_tiler_rect_add()
  * @see eina_tiler_clear()
@@ -279,7 +279,7 @@ EAPI void               eina_tiler_rect_del(Eina_Tiler *t, const Eina_Rectangle
 /**
  * @brief Removes all rectangles from tiles.
  *
- * @param t The tiler to clear.
+ * @param[in,out] t The tiler to clear.
  *
  * @see eina_tiler_rect_del()
  */
@@ -288,7 +288,7 @@ EAPI void               eina_tiler_clear(Eina_Tiler *t);
 /**
  * @brief Creates a iterator to access the tilers calculated rectangles.
  *
- * @param t The tiler to iterate over.
+ * @param[in] t The tiler to iterate over.
  * @return A iterator containing Eina_Rectangle.
  */
 EAPI Eina_Iterator     *eina_tiler_iterator_new(const Eina_Tiler *t);
@@ -296,12 +296,12 @@ EAPI Eina_Iterator     *eina_tiler_iterator_new(const Eina_Tiler *t);
 /**
  * @brief Creates a new Eina_Iterator that iterates over a list of tiles.
  *
- * @param   x X axis coordinate.
- * @param   y Y axis coordinate.
- * @param   w Width.
- * @param   h Height.
- * @param   tile_w Tile width.
- * @param   tile_h Tile height.
+ * @param[in] x X axis coordinate.
+ * @param[in] y Y axis coordinate.
+ * @param[in] w Width.
+ * @param[in] h Height.
+ * @param[in] tile_w Tile width.
+ * @param[in] tile_h Tile height.
  * @return  A pointer to the Eina_Iterator. @c NULL on failure.
  *
  * The region defined by @a x, @a y, @a w, @a h will be divided in to a grid of
@@ -317,8 +317,8 @@ EAPI Eina_Iterator     *eina_tile_grid_slicer_iterator_new(int x, int y, int w,
 /**
  * @brief Gets the union of two tilers.
  *
- * @param   dst The first tiler, will store the result.
- * @param   src The second tiler.
+ * @param[in,out] dst The first tiler, will store the result.
+ * @param[in] src The second tiler.
  * @return  #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * This function gets the union of tilers @p dst and @p src.
@@ -330,8 +330,8 @@ EAPI Eina_Bool          eina_tiler_union(Eina_Tiler *dst, Eina_Tiler *src);
 /**
  * @brief Subtracts two tilers.
  *
- * @param   dst The first tiler, will store the result.
- * @param   src The second tiler.
+ * @param[in,out] dst The first tiler, will store the result.
+ * @param[in] src The second tiler.
  * @return  #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * This function subtracts two tilers @p dst and @p src.
@@ -343,8 +343,8 @@ EAPI Eina_Bool          eina_tiler_subtract(Eina_Tiler *dst, Eina_Tiler *src);
 /**
  * @brief Gets the intersection of two tilers.
  *
- * @param   t1 The first tile.
- * @param   t2 The second tiler.
+ * @param[in] t1 The first tile.
+ * @param[in] t2 The second tiler.
  * @return  A pointer of intersection result. @c NULL if intersection doesn't exist.
  *
  * This function gets the intersection of two tilers @p t1 and @p t2.
@@ -356,8 +356,8 @@ EAPI Eina_Tiler        *eina_tiler_intersection(Eina_Tiler *t1, Eina_Tiler *t2);
 /**
  * @brief Gets whether two tilers are equal in rects or not.
  *
- * @param   t1 The first tiler.
- * @param   t2 The second tiler.
+ * @param[in] t1 The first tiler.
+ * @param[in] t2 The second tiler.
  * @return  #EINA_TRUE if equal, #EINA_FALSE if unequal.
  *
  * This function gets result of comparison for @p t1 and @p t2.
@@ -369,8 +369,8 @@ EAPI Eina_Bool           eina_tiler_equal(const Eina_Tiler *t1, const Eina_Tiler
 /**
  * @brief Iterates over the tiles set by eina_tile_grid_slicer_setup().
  *
- * @param   slc Pointer to an Eina_Tile_Grid_Slicer struct.
- * @param   rect Pointer to a struct Eina_Tile_Grid_Info *.
+ * @param[in,out] slc Pointer to an Eina_Tile_Grid_Slicer struct.
+ * @param[out] rect Pointer to a struct Eina_Tile_Grid_Info *.
  * @return  #EINA_TRUE if the current rect is valid. #EINA_FALSE if there
  * are no more rects to iterate over (and thus the current one isn't valid).
  *
@@ -385,13 +385,13 @@ static inline Eina_Bool eina_tile_grid_slicer_next(Eina_Tile_Grid_Slicer *slc, c
 /**
  * @brief Sets up an Eina_Tile_Grid_Slicer struct.
  *
- * @param   slc Pointer to an Eina_Tile_Grid_Slicer struct.
- * @param   x X axis coordinate.
- * @param   y Y axis coordinate.
- * @param   w Width.
- * @param   h Height.
- * @param   tile_w Tile width.
- * @param   tile_h Tile height.
+ * @param[out] slc Pointer to an Eina_Tile_Grid_Slicer struct.
+ * @param[in] x X axis coordinate.
+ * @param[in] y Y axis coordinate.
+ * @param[in] w Width.
+ * @param[in] h Height.
+ * @param[in] tile_w Tile width.
+ * @param[in] tile_h Tile height.
  * @return  A pointer to the Eina_Iterator, @c NULL on failure.
  *
  * The region defined by @a x, @a y, @a w, @a h will be divided into a grid of
diff --git a/src/lib/eina/eina_tmpstr.h b/src/lib/eina/eina_tmpstr.h
index f300be13c3..164fe43aa5 100644
--- a/src/lib/eina/eina_tmpstr.h
+++ b/src/lib/eina/eina_tmpstr.h
@@ -123,7 +123,7 @@ typedef const char Eina_Tmpstr;
 /**
  * @brief Adds a new temporary string based on the input string.
  *
- * @param str This is the input string that is copied into the temp string.
+ * @param[in] str This is the input string that is copied into the temp string.
  * @return A pointer to the tmp string that is a standard C string.
  *
  * When you add a temporary string (tmpstr) it is expected to have a very
@@ -167,8 +167,8 @@ EAPI Eina_Tmpstr *eina_tmpstr_add(const char *str) EINA_WARN_UNUSED_RESULT;
 /**
  * @brief Adds a new temporary string based on the input string and length.
  *
- * @param str This is the input string that is copied into the temp string.
- * @param length This is the maximum length and the allocated length of the temp string.
+ * @param[in] str This is the input string that is copied into the temp string.
+ * @param[in] length This is the maximum length and the allocated length of the temp string.
  * @return A pointer to the tmp string that is a standard C string.
  *
  * When you add a temporary string (tmpstr) it is expected to have a very
@@ -213,7 +213,7 @@ EINA_DEPRECATED EAPI size_t eina_tmpstr_strlen(Eina_Tmpstr *tmpstr);
 /**
  * @brief Returns the length of a temporary string.
  *
- * @param tmpstr This is any C string pointer, but if it is a tmp string
+ * @param[in] tmpstr This is any C string pointer, but if it is a tmp string
  * it will return the length faster.
  * @return The length of the string.
  *
@@ -224,7 +224,7 @@ EAPI size_t eina_tmpstr_len(Eina_Tmpstr *tmpstr);
 /**
  * @brief Deletes the temporary string if it is one, or ignore it if it is not.
  *
- * @param tmpstr This is any C string pointer, but if it is a tmp string
+ * @param[in] tmpstr This is any C string pointer, but if it is a tmp string
  * it is freed.
  *
  * This will delete the given temporary string @p tmpstr if it is a valid
@@ -241,7 +241,7 @@ EAPI void eina_tmpstr_del(Eina_Tmpstr *tmpstr) EINA_ARG_NONNULL(1);
  * @brief Adds a new temporary string using the passed string. The passed
  * string is used directly as the buffer. The passed string must be malloced.
  *
- * @param str The input string to manage.
+ * @param[in] str The input string to manage.
  * @return A pointer to the tmp string that is a standard C string.
  *
  * This function creates a new temporary string. On error, @c NULL is
@@ -256,8 +256,8 @@ EAPI Eina_Tmpstr *eina_tmpstr_manage_new(char *str) EINA_WARN_UNUSED_RESULT;
  * @brief Adds a new temporary string using the passed string. The passed
  * string is used directly as the buffer. The passed string must be malloced.
  *
- * @param str The input string to manage.
- * @param length The length of the string.
+ * @param[in] str The input string to manage.
+ * @param[in] length The length of the string.
  * @return A pointer to the tmp string that is a standard C string.
  *
  * This function creates a new temporary string. On error, @c NULL is
diff --git a/src/lib/eina/eina_trash.h b/src/lib/eina/eina_trash.h
index 549d9359c4..78935ec5f1 100644
--- a/src/lib/eina/eina_trash.h
+++ b/src/lib/eina/eina_trash.h
@@ -60,8 +60,8 @@ static inline void  eina_trash_init(Eina_Trash **trash) EINA_ARG_NONNULL(1);
  *          you can push it in a trash for a later use. This function just
  *          provide a fast way to push a now unused pointer into a trash.
  *
- * @param[in] trash A pointer to an Eina_Trash
- * @param data An unused pointer big enough to put a (void*)
+ * @param[in,out] trash A pointer to an Eina_Trash
+ * @param[in] data An unused pointer big enough to put a (void*)
  *
  * @note Do not use the pointer after insertion or bad things will
  *       happens.
@@ -90,8 +90,8 @@ static inline void *eina_trash_pop(Eina_Trash **trash) EINA_ARG_NONNULL(1) EINA_
  * @details This macro allows the cleaning of @a trash in an easy way. It
  *          removes all the pointers from @a trash until it's empty.
  *
- * @param trash The trash to clean
- * @param data The pointer extracted from the trash
+ * @param[in,out] trash The trash to clean
+ * @param[out] data The pointer extracted from the trash
  *
  * @note This macro can be used for freeing the data in the trash, like in
  *       the following example:
diff --git a/src/lib/eina/eina_types.h b/src/lib/eina/eina_types.h
index 84979022c9..131003c61c 100644
--- a/src/lib/eina/eina_types.h
+++ b/src/lib/eina/eina_types.h
@@ -312,7 +312,7 @@
  * @def EINA_ARG_NONNULL
  * Used to warn when the specified arguments of the function are @c NULL.
  *
- * @param ... Ordinals of the parameters to check for nullity (1..n)
+ * @param[in] ... Ordinals of the parameters to check for nullity (1..n)
  *
  * @return Nothing, but Doxygen will complain if it's not documented :-P
  *
@@ -343,21 +343,21 @@
 
 /**
  * @def EINA_PRINTF
- * @param fmt The format to be used.
- * @param arg The argument to be used.
+ * @param[in] fmt The format to be used.
+ * @param[in] arg The argument to be used.
  */
 # define EINA_PRINTF(fmt, arg)
 
 /**
  * @def EINA_SCANF
- * @param fmt The format to be used.
- * @param arg The argument to be used.
+ * @param[in] fmt The format to be used.
+ * @param[in] arg The argument to be used.
  */
 # define EINA_SCANF(fmt, arg)
 
 /**
  * @def EINA_FORMAT
- * @param fmt The format to be used.
+ * @param[in] fmt The format to be used.
  */
 # define EINA_FORMAT(fmt)
 
@@ -375,13 +375,13 @@
 
 /**
  * @def EINA_UNLIKELY
- * @param exp The expression to be used.
+ * @param[in] exp The expression to be used.
  */
 # define EINA_UNLIKELY(exp) exp
 
 /**
  * @def EINA_LIKELY
- * @param exp The expression to be used.
+ * @param[in] exp The expression to be used.
  */
 # define EINA_LIKELY(exp)   exp
 
diff --git a/src/lib/eina/eina_unicode.h b/src/lib/eina/eina_unicode.h
index e32d0591f3..1f798ef52e 100644
--- a/src/lib/eina/eina_unicode.h
+++ b/src/lib/eina/eina_unicode.h
@@ -47,8 +47,8 @@ EAPI size_t        eina_unicode_strlen(const Eina_Unicode *ustr) EINA_ARG_NONNUL
  * of n.  If the terminating character is not found in the string, it returns
  * n.
  *
- * @param ustr String to search
- * @param n Max length to search
+ * @param[in] ustr String to search
+ * @param[in] n Max length to search
  * @return Number of characters or n.
  */
 EAPI size_t        eina_unicode_strnlen(const Eina_Unicode *ustr, int n) EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT EINA_PURE;
@@ -56,7 +56,7 @@ EAPI size_t        eina_unicode_strnlen(const Eina_Unicode *ustr, int n) EINA_AR
 /**
  * @brief Same as the standard strdup just with Eina_Unicode instead of char.
  *
- * @param text The text to duplicate.
+ * @param[in] text The text to duplicate.
  * @return The duplicated string.
  */
 EAPI Eina_Unicode *eina_unicode_strdup(const Eina_Unicode *text) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_MALLOC;
@@ -64,8 +64,8 @@ EAPI Eina_Unicode *eina_unicode_strdup(const Eina_Unicode *text) EINA_WARN_UNUSE
 /**
  * @brief Same as strdup but cuts on the given size. Assumes n < len
  *
- * @param text The text to duplicate.
- * @param n The maximum size of the text to duplicate.
+ * @param[in] text The text to duplicate.
+ * @param[in] n The maximum size of the text to duplicate.
  * @return The duplicated string.
  *
  * This function duplicates @p text. The resulting string is cut on @p
@@ -79,8 +79,8 @@ EAPI Eina_Unicode *eina_unicode_strndup(const Eina_Unicode *text, size_t n) EINA
 /**
  * @brief Same as the standard strcmp just with Eina_Unicode instead of char.
  *
- * @param a The text to be compared.
- * @param b The text to be compared.
+ * @param[in] a The text to be compared.
+ * @param[in] b The text to be compared.
  * @return An integer value indicating the ordinal relation of @p a to @p b.
  */
 EAPI int           eina_unicode_strcmp(const Eina_Unicode *a, const Eina_Unicode *b) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1, 2) EINA_PURE;
@@ -88,8 +88,8 @@ EAPI int           eina_unicode_strcmp(const Eina_Unicode *a, const Eina_Unicode
 /**
  * @brief Same as the standard strcpy just with Eina_Unicode instead of char.
  *
- * @param dest The text which @p source is to be copied.
- * @param source The text to copy from.
+ * @param[out] dest The text which @p source is to be copied.
+ * @param[in] source The text to copy from.
  * @return @p dest is returned.
  */
 EAPI Eina_Unicode *eina_unicode_strcpy(Eina_Unicode *dest, const Eina_Unicode *source) EINA_ARG_NONNULL(1, 2);
@@ -97,8 +97,8 @@ EAPI Eina_Unicode *eina_unicode_strcpy(Eina_Unicode *dest, const Eina_Unicode *s
 /**
  * @brief Same as the standard strstr just with Eina_Unicode instead of char.
  *
- * @param haystack The text to be searched.
- * @param needle The text to search for
+ * @param[in] haystack The text to be searched.
+ * @param[in] needle The text to search for
  * @return The substring of @p haystack which starts with @p needle
  *         when @p needle is founded in @p haystack, or NULL is returned.
  */
@@ -107,9 +107,9 @@ EAPI Eina_Unicode *eina_unicode_strstr(const Eina_Unicode *haystack, const Eina_
 /**
  * @brief Same as the standard strncpy just with Eina_Unicode instead of char.
  *
- * @param dest The text which @p source is to be copied.
- * @param source The text to copy from.
- * @param n Maximum number of characters to be copied from @p source.
+ * @param[out] dest The text which @p source is to be copied.
+ * @param[in] source The text to copy from.
+ * @param[in] n Maximum number of characters to be copied from @p source.
  * @return @p dest is returned.
  */
 EAPI Eina_Unicode *eina_unicode_strncpy(Eina_Unicode *dest, const Eina_Unicode *source, size_t n) EINA_ARG_NONNULL(1, 2);
@@ -117,7 +117,7 @@ EAPI Eina_Unicode *eina_unicode_strncpy(Eina_Unicode *dest, const Eina_Unicode *
 /**
  * @see eina_str_escape()
  *
- * @param str The string to escape.
+ * @param[in] str The string to escape.
  * @return The escaped string.
  */
 EAPI Eina_Unicode *eina_unicode_escape(const Eina_Unicode *str) EINA_ARG_NONNULL(1) EINA_MALLOC EINA_WARN_UNUSED_RESULT;
@@ -133,8 +133,8 @@ EAPI Eina_Unicode *eina_unicode_escape(const Eina_Unicode *str) EINA_ARG_NONNULL
  * On error: return a codepoint between DC80 to DCFF where the low 8 bits
  *   are the byte's value.
  *
- * @param buf the string
- * @param iindex the index to look at and return by.
+ * @param[in] buf the string
+ * @param[in,out] iindex the index to look at and return by.
  * @return the codepoint found, 0 if @p buf or @p iindex are NULL
  *
  * @since 1.8.0
@@ -151,8 +151,8 @@ static inline Eina_Unicode eina_unicode_utf8_next_get(const char *buf, int *iind
  * On error: return a codepoint between DC80 to DCFF where the low 8 bits
  *   are the byte's value.
  *
- * @param buf the string
- * @param iindex the index to look at and return by.
+ * @param[in] buf the string
+ * @param[in,out] iindex the index to look at and return by.
  * @return the codepoint found, 0 if @p buf or @p iindex are NULL
  *
  * @since 1.1.0
@@ -168,8 +168,8 @@ EAPI Eina_Unicode eina_unicode_utf8_get_next(const char *buf, int *iindex) EINA_
  * On error: return a codepoint between DC80 to DCFF where the low 8 bits
  *   are the byte's value.
  *
- * @param buf the string
- * @param iindex the index to look at and return by.
+ * @param[in] buf the string
+ * @param[in,out] iindex the index to look at and return by.
  * @return the codepoint found.
  *
  * @since 1.1.0
@@ -181,7 +181,7 @@ EAPI Eina_Unicode eina_unicode_utf8_get_prev(const char *buf, int *iindex) EINA_
  * the number of Eina_Unicodes it'll take to store this string in
  * an Eina_Unicode string.
  *
- * @param buf the string
+ * @param[in] buf the string
  * @return the number of unicode characters (not bytes) in the string
  *
  * @since 1.1.0
@@ -191,9 +191,10 @@ EAPI int eina_unicode_utf8_get_len(const char *buf) EINA_ARG_NONNULL(1);
 /**
  * Converts a utf-8 string to a newly allocated Eina_Unicode string.
  *
- * @param utf the string in utf-8
- * @param _len the length of the returned Eina_Unicode string.
+ * @param[in] utf the string in utf-8
+ * @param[out] _len the length of the returned Eina_Unicode string.
  * @return the newly allocated Eina_Unicode string.
+ *
  * @since 1.1.0
  */
 EAPI Eina_Unicode *eina_unicode_utf8_to_unicode(const char *utf, int *_len) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_MALLOC;
@@ -201,9 +202,9 @@ EAPI Eina_Unicode *eina_unicode_utf8_to_unicode(const char *utf, int *_len) EINA
 /**
  * Converts an Eina_Unicode string to a newly allocated utf-8 substring at given length.
  *
- * @param uni the Eina_Unicode string
- * @param ulen the length in the unicode string to convert.
- * @param _len the length byte length of the return utf8 substring.
+ * @param[in] uni the Eina_Unicode string
+ * @param[in] ulen the length in the unicode string to convert.
+ * @param[out] _len the length byte length of the return utf8 substring.
  * @return the newly allocated utf-8 substring.
  *
  * @since 1.17
@@ -213,8 +214,8 @@ EAPI char * eina_unicode_unicode_to_utf8_range(const Eina_Unicode *uni, int ulen
 /**
  * Converts an Eina_Unicode string to a newly allocated utf-8 string.
  *
- * @param uni the Eina_Unicode string
- * @param _len the length byte length of the return utf8 string.
+ * @param[in] uni the Eina_Unicode string
+ * @param[out] _len the length byte length of the return utf8 string.
  * @return the newly allocated utf-8 string.
  *
  * @since 1.1.0
diff --git a/src/lib/eina/eina_ustringshare.h b/src/lib/eina/eina_ustringshare.h
index 7e74076611..5c92e5f67e 100644
--- a/src/lib/eina/eina_ustringshare.h
+++ b/src/lib/eina/eina_ustringshare.h
@@ -92,8 +92,8 @@
 /**
  * @brief Retrieves an instance of a string for use in a program.
  *
- * @param   str The string to retrieve an instance of.
- * @param   slen The string size (<= strlen(str)).
+ * @param[in] str The string to retrieve an instance of.
+ * @param[in] slen The string size (<= strlen(str)).
  * @return  A pointer to an instance of the string on success,
  *          @c NULL on failure.
  *
@@ -114,7 +114,7 @@ EAPI const Eina_Unicode *eina_ustringshare_add_length(const Eina_Unicode *str, u
 /**
  * @brief Retrieves an instance of a string for use in a program.
  *
- * @param   str The NULL-terminated string to retrieve an instance of.
+ * @param[in] str The NULL-terminated string to retrieve an instance of.
  * @return  A pointer to an instance of the string on success,
  *          @c NULL on failure.
  *
@@ -135,7 +135,7 @@ EAPI const Eina_Unicode *eina_ustringshare_add(const Eina_Unicode *str) EINA_WAR
 /**
  * @brief Increments references of the given shared string.
  *
- * @param str The shared string.
+ * @param[in] str The shared string.
  * @return    A pointer to an instance of the string on success,
  *            @c NULL on failure.
  *
@@ -151,7 +151,7 @@ EAPI const Eina_Unicode *eina_ustringshare_ref(const Eina_Unicode *str);
 /**
  * @brief Notes that the given string has lost an instance.
  *
- * @param str String The given string.
+ * @param[in] str String The given string.
  *
  * This function decreases the reference counter associated to @p str
  * if it exists. If that counter reaches 0, the memory associated to
@@ -166,7 +166,7 @@ EAPI void                eina_ustringshare_del(const Eina_Unicode *str);
 /**
  * @brief Notes that the given string @b must be shared.
  *
- * @param str The shared string to know the length. It is safe to
+ * @param[in] str The shared string to know the length. It is safe to
  *        give @c NULL, in that case @c -1 is returned.
  * @return The length of a shared string.
  *
diff --git a/src/lib/eina/eina_util.h b/src/lib/eina/eina_util.h
index dacd9cdd65..6afd424921 100644
--- a/src/lib/eina/eina_util.h
+++ b/src/lib/eina/eina_util.h
@@ -52,8 +52,8 @@ EAPI const char *eina_environment_tmp_get(void);
 
 /**
  * @brief Warningless comparison of doubles using ==
- * @param a First member to compare
- * @param b Second member to compare
+ * @param[in] a First member to compare
+ * @param[in] b Second member to compare
  *
  * @return @c true if two doubles match
  * @since 1.19
@@ -62,8 +62,8 @@ static inline Eina_Bool eina_dbl_exact(double a, double b);
 
 /**
  * @brief Warningless comparison of floats using ==
- * @param a First member to compare
- * @param b Second member to compare
+ * @param[in] a First member to compare
+ * @param[in] b Second member to compare
  *
  * @return @c true if two floats match
  * @since 1.19
@@ -72,8 +72,8 @@ static inline Eina_Bool eina_flt_exact(float a, float b);
 
 /**
  * @brief Safe comparison of float
- * @param a First member to compare
- * @param b Second member to compare
+ * @param[in] a First member to compare
+ * @param[in] b Second member to compare
  * @since 1.19
  *
  * @return @c true if two floats match
@@ -82,7 +82,7 @@ static inline Eina_Bool eina_flt_exact(float a, float b);
 
 /**
  * @brief Determines if a float is not zero
- * @param a The float
+ * @param[in] a The float
  *
  * @return @c true if float is not zero
  * @since 1.19
@@ -91,8 +91,8 @@ static inline Eina_Bool eina_flt_exact(float a, float b);
 
 /**
  * @brief Safe comparison of double
- * @param a First member to compare
- * @param b Second member to compare
+ * @param[in] a First member to compare
+ * @param[in] b Second member to compare
  * @since 1.19
  *
  * @return @c true if two double match
@@ -101,7 +101,7 @@ static inline Eina_Bool eina_flt_exact(float a, float b);
 
 /**
  * @brief Determines if a double is not zero
- * @param a The double
+ * @param[in] a The double
  *
  * @return @c true if double is not zero
  * @since 1.19
diff --git a/src/lib/eina/eina_value.h b/src/lib/eina/eina_value.h
index 7124cbf07d..b3a702456e 100644
--- a/src/lib/eina/eina_value.h
+++ b/src/lib/eina/eina_value.h
@@ -951,8 +951,8 @@ static inline Eina_Bool eina_value_vget(const Eina_Value *value,
 /**
  * @brief Sets the generic value from pointer.
  *
- * @param [in,out] value Source value object
- * @param [in] ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -1188,8 +1188,8 @@ struct _Eina_Value_Array
 
 /**
  * @brief Creates generic value storage of type array.
- * @param subtype How to manage this array members.
- * @param step How to grow the members array.
+ * @param[in] subtype How to manage this array members.
+ * @param[in] step How to grow the members array.
  * @return The new value or @c NULL on failure.
  *
  * Create a new generic value storage of type array. The members are
@@ -1208,9 +1208,9 @@ EAPI Eina_Value *eina_value_array_new(const Eina_Value_Type *subtype,
 
 /**
  * @brief Initializes generic value storage of type array.
- * @param value Value object
- * @param subtype How to manage array members.
- * @param step How to grow the members array.
+ * @param[out] value Value object
+ * @param[in] subtype How to manage array members.
+ * @param[in] step How to grow the members array.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * Initializes new generic value storage of type array with the given
@@ -1235,7 +1235,7 @@ static inline Eina_Bool eina_value_array_setup(Eina_Value *value,
 
 /**
  * @brief Queries number of elements in value of array type.
- * @param value value object.
+ * @param[in] value value object.
  * @return number of child elements.
  * @since 1.2
  */
@@ -1243,8 +1243,8 @@ static inline unsigned int eina_value_array_count(const Eina_Value *value);
 
 /**
  * @brief Removes element at given position in value of array type.
- * @param value value object.
- * @param position index of the member
+ * @param[in,out] value value object.
+ * @param[in] position index of the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  * @since 1.2
  */
@@ -1253,8 +1253,8 @@ static inline Eina_Bool eina_value_array_remove(Eina_Value *value,
 
 /**
  * @brief Sets the generic value in an array member.
- * @param value Source value object
- * @param position Index of the member
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen subtype. The list for
@@ -1312,8 +1312,8 @@ static inline Eina_Bool eina_value_array_set(Eina_Value *value,
 
 /**
  * @brief Gets the generic value from an array member.
- * @param value Source value object
- * @param position Index of the member
+ * @param[in] value Source value object
+ * @param[in] position Index of the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, and the
@@ -1369,8 +1369,9 @@ static inline Eina_Bool eina_value_array_get(const Eina_Value *value,
 
 /**
  * @brief Inserts a generic value in an array member position.
- * @param value Source value object
- * @param position Index of the member
+ * @param[in] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] ... Variable arguments of data to insert
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen subtype. The list for
@@ -1429,7 +1430,8 @@ static inline Eina_Bool eina_value_array_insert(Eina_Value *value,
 /**
  * @brief Appends a generic value in an array.
  *
- * @param value Source value object
+ * @param[in,out] value Source value object
+ * @param[in] ... Variable arguments
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen subtype. The list for
@@ -1486,9 +1488,9 @@ static inline Eina_Bool eina_value_array_append(Eina_Value *value,
 /**
  * @brief Sets a generic value to an array member.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_array_set()
@@ -1510,9 +1512,9 @@ static inline Eina_Bool eina_value_array_vset(Eina_Value *value,
 /**
  * @brief Gets the generic value from an array member.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param args Variable argument
+ * @param[in] value Source value object
+ * @param[in] position Index of the member
+ * @param[out] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, the
@@ -1532,9 +1534,9 @@ static inline Eina_Bool eina_value_array_vget(const Eina_Value *value,
 /**
  * @brief Inserts a generic value to an array member position.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_array_set()
@@ -1556,8 +1558,8 @@ static inline Eina_Bool eina_value_array_vinsert(Eina_Value *value,
 /**
  * @brief Appends a generic value to an array.
  *
- * @param value Source value object
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_array_set()
@@ -1579,9 +1581,9 @@ static inline Eina_Bool eina_value_array_vappend(Eina_Value *value,
 /**
  * @brief Sets a generic value to an array member from a pointer.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -1643,9 +1645,9 @@ static inline Eina_Bool eina_value_array_pset(Eina_Value *value,
 /**
  * @brief Retrieves a generic value into a pointer from an array member.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param ptr Pointer to receive the contents.
+ * @param[in] value Source value object
+ * @param[in] position Index of the member
+ * @param[out] ptr Pointer to receive the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in pointer contents, the actual value is
@@ -1702,9 +1704,9 @@ static inline Eina_Bool eina_value_array_pget(const Eina_Value *value,
 /**
  * @brief Inserts a generic value to an array member position from a pointer.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -1764,8 +1766,9 @@ static inline Eina_Bool eina_value_array_pinsert(Eina_Value *value,
 
 /**
  * @brief Appends a generic value to an array from a pointer.
- * @param value Source value object
- * @param ptr Pointer to specify the contents.
+ *
+ * @param[in,out] value Source value object
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -1825,9 +1828,9 @@ static inline Eina_Bool eina_value_array_pappend(Eina_Value *value,
 /**
  * @brief Retrieves a value from the array as an Eina_Value copy.
  *
- * @param src Source value object
- * @param position Index of the member
- * @param dst Where to return the array member
+ * @param[in] src Source value object
+ * @param[in] position Index of the member
+ * @param[out] dst Where to return the array member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The argument @a dst is considered uninitialized and it's set to
@@ -1844,10 +1847,10 @@ static inline Eina_Bool eina_value_array_value_get(const Eina_Value *src,
  * @brief Definition for the macro to iterate over an array contained in an Eina_Value.
  * @since 1.21
  *
- * @param array The list to iterate over.
- * @param length Contain the length of the array
- * @param it Contain the current position walked over
- * @param value Contain the value at the current position.
+ * @param[in] array The list to iterate over.
+ * @param[in] length Contain the length of the array
+ * @param[out] it Contain the current position walked over
+ * @param[out] value Contain the value at the current position.
  *
  * This macro iterates over @p array from the first element to
  * the last. @p value is the data related to the current element.
@@ -1916,7 +1919,7 @@ struct _Eina_Value_List
 /**
  * @brief Creates generic value storage of type list.
  *
- * @param subtype How to manage this list members.
+ * @param[in] subtype How to manage this list members.
  * @return The new value, or @c NULL on failure.
  *
  * Create a new generic value storage of type list. The members are
@@ -1937,8 +1940,8 @@ EAPI Eina_Value *eina_value_list_new(const Eina_Value_Type *subtype) EINA_ARG_NO
 /**
  * @brief Initializes generic value storage of type list.
  *
- * @param value Value object
- * @param subtype How to manage this list members.
+ * @param[out] value Value object
+ * @param[in] subtype How to manage this list members.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * Initializes new generic value storage of type list with the given
@@ -1963,7 +1966,7 @@ static inline Eina_Bool eina_value_list_setup(Eina_Value *value,
 /**
  * @brief Queries number of elements in value of list type.
  *
- * @param value value object.
+ * @param[in]value value object.
  * @return number of child elements.
  *
  * @since 1.2
@@ -1973,8 +1976,8 @@ static inline unsigned int eina_value_list_count(const Eina_Value *value);
 /**
  * @brief Removes element at given position in value of list type.
  *
- * @param value value object.
- * @param position index of the member
+ * @param[in,out] value value object.
+ * @param[in] position index of the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -1985,8 +1988,8 @@ static inline Eina_Bool eina_value_list_remove(Eina_Value *value,
 /**
  * @brief Sets the generic value in a list member.
  *
- * @param value Source value object
- * @param position Index of the member
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen subtype. The list for
@@ -2044,8 +2047,8 @@ static inline Eina_Bool eina_value_list_set(Eina_Value *value,
 /**
  * @brief Gets the generic value from a list member.
  *
- * @param value Source value object
- * @param position Index of the member
+ * @param[in] value Source value object
+ * @param[in] position Index of the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, the
@@ -2101,8 +2104,8 @@ static inline Eina_Bool eina_value_list_get(const Eina_Value *value,
 /**
  * @brief Inserts the generic value in a list member position.
  *
- * @param value Source value object
- * @param position Index of the member
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen subtype. The list for
@@ -2160,7 +2163,8 @@ static inline Eina_Bool eina_value_list_insert(Eina_Value *value,
 /**
  * @brief Appends the generic value in a list.
  *
- * @param value Source value object
+ * @param[in,out] value Source value object
+ * @param[in] ... Variable arguments
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen subtype. The list for
@@ -2216,9 +2220,9 @@ static inline Eina_Bool eina_value_list_append(Eina_Value *value,
 /**
  * @brief Sets the generic value in a list member.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_list_set()
@@ -2240,9 +2244,9 @@ static inline Eina_Bool eina_value_list_vset(Eina_Value *value,
 /**
  * @brief Gets the generic value from a list member.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param args Variable argument
+ * @param[in] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, the
@@ -2262,9 +2266,9 @@ static inline Eina_Bool eina_value_list_vget(const Eina_Value *value,
 /**
  * @brief Inserts the generic value in a list member position.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_list_set()
@@ -2286,8 +2290,8 @@ static inline Eina_Bool eina_value_list_vinsert(Eina_Value *value,
 /**
  * @brief Appends the generic value in a list.
  *
- * @param value Source value object
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_list_set()
@@ -2309,9 +2313,9 @@ static inline Eina_Bool eina_value_list_vappend(Eina_Value *value,
 /**
  * @brief Sets the generic value in a list member from pointer.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -2372,9 +2376,9 @@ static inline Eina_Bool eina_value_list_pset(Eina_Value *value,
 /**
  * @brief Gets the generic value to pointer from a list member.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param ptr Pointer to receive the contents.
+ * @param[in] value Source value object
+ * @param[in] position Index of the member
+ * @param[out] ptr Pointer to receive the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in pointer contents, the actual value is
@@ -2430,9 +2434,9 @@ static inline Eina_Bool eina_value_list_pget(const Eina_Value *value,
 /**
  * @brief Inserts the generic value in a list member position from pointer.
  *
- * @param value Source value object
- * @param position Index of the member
- * @param ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] position Index of the member
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -2492,8 +2496,8 @@ static inline Eina_Bool eina_value_list_pinsert(Eina_Value *value,
 /**
  * @brief Appends the generic value in a list from pointer.
  *
- * @param value Source value object
- * @param ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -2583,8 +2587,8 @@ struct _Eina_Value_Hash
 /**
  * @brief Creates generic value storage of type hash.
  *
- * @param subtype How to manage this hash members.
- * @param buckets_power_size How to allocate hash buckets (2 ^
+ * @param[in] subtype How to manage this hash members.
+ * @param[in] buckets_power_size How to allocate hash buckets (2 ^
  *        buckets_power_size), if zero then a sane value is chosen.
  * @return The new value, or @c NULL on failure.
  *
@@ -2606,9 +2610,9 @@ EAPI Eina_Value *eina_value_hash_new(const Eina_Value_Type *subtype, unsigned in
 /**
  * @brief Initializes generic value storage of type hash.
  *
- * @param value Value object
- * @param subtype How to manage this hash members.
- * @param buckets_power_size How to allocate hash buckets (2 ^
+ * @param[in] value Value object
+ * @param[in] subtype How to manage this hash members.
+ * @param[in] buckets_power_size How to allocate hash buckets (2 ^
  *        buckets_power_size), if zero then a sane value is chosen.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
@@ -2635,7 +2639,7 @@ static inline Eina_Bool eina_value_hash_setup(Eina_Value *value,
 /**
  * @brief Queries number of elements in value of hash type.
  *
- * @param value value object.
+ * @param[in] value value object.
  * @return number of child elements.
  *
  * @since 1.2
@@ -2645,8 +2649,8 @@ static inline unsigned int eina_value_hash_population(const Eina_Value *value);
 /**
  * @brief Removes element at given position in value of hash type.
  *
- * @param value value object.
- * @param key key to find the member
+ * @param[in,out] value value object.
+ * @param[in] key key to find the member
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -2657,8 +2661,9 @@ static inline Eina_Bool eina_value_hash_del(Eina_Value *value,
 /**
  * @brief Sets the generic value in an hash member.
  *
- * @param value Source value object
- * @param key Key to find the member
+ * @param[in,out] value Source value object
+ * @param[in] key Key to find the member
+ * @param[in] ... Variable arguments of data to set
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen subtype. The list for
@@ -2709,8 +2714,9 @@ static inline Eina_Bool eina_value_hash_set(Eina_Value *value,
 /**
  * @brief Gets the generic value from an hash member.
  *
- * @param value Source value object
- * @param key Key to find the member
+ * @param[in] value Source value object
+ * @param[in] key Key to find the member
+ * @param[out] ...
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, the
@@ -2765,9 +2771,9 @@ static inline Eina_Bool eina_value_hash_get(const Eina_Value *value,
 /**
  * @brief Sets the generic value in an hash member.
  *
- * @param value Source value object
- * @param key Key to find the member
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] key Key to find the member
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_hash_set()
@@ -2783,9 +2789,9 @@ static inline Eina_Bool eina_value_hash_vset(Eina_Value *value,
 /**
  * @brief Gets the generic value from an hash member.
  *
- * @param value Source value object
- * @param key Key to find the member
- * @param args Variable argument
+ * @param[in] value Source value object
+ * @param[in] key Key to find the member
+ * @param[out] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, the
@@ -2806,9 +2812,9 @@ static inline Eina_Bool eina_value_hash_vget(const Eina_Value *value,
 /**
  * @brief Sets the generic value in an hash member from pointer.
  *
- * @param value Source value object
- * @param key Key to find the member
- * @param ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] key Key to find the member
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -2861,9 +2867,9 @@ static inline Eina_Bool eina_value_hash_pset(Eina_Value *value,
 /**
  * @brief Gets the generic value to pointer from an hash member.
  *
- * @param value Source value object
- * @param key Key to find the member
- * @param ptr Pointer to receive the contents.
+ * @param[in] value Source value object
+ * @param[in] key Key to find the member
+ * @param[out] ptr Pointer to receive the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in pointer contents, the actual value is
@@ -3201,7 +3207,7 @@ struct _Eina_Value_Struct
 /**
  * @brief Creates generic value storage of type struct.
  *
- * @param desc How to manage this struct members.
+ * @param[in] desc How to manage this struct members.
  * @return The new value, or @c NULL on failure.
  *
  * Create a new generic value storage of type struct. The members are
@@ -3222,8 +3228,8 @@ EAPI Eina_Value *eina_value_struct_new(const Eina_Value_Struct_Desc *desc) EINA_
 /**
  * @brief Initializes generic value storage of type struct.
  *
- * @param value Value object
- * @param desc How to manage this struct members.
+ * @param[out] value Value object
+ * @param[in] desc How to manage this struct members.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * Initializes new generic value storage of type struct with the given
@@ -3248,7 +3254,7 @@ static inline Eina_Bool eina_value_struct_setup(Eina_Value *value,
 /**
  * @brief Checks for a struct and get its description.
  *
- * @param value Value object
+ * @param[in] value Value object
  * @return structure description, with all members and size.
  * on failure, #NULL is returned.
  *
@@ -3259,8 +3265,9 @@ static inline const Eina_Value_Struct_Desc *eina_value_struct_desc_get(const Ein
 /**
  * @brief Sets the generic value in a struct member.
  *
- * @param value Source value object
- * @param name Name to find the member
+ * @param[in,out] value Source value object
+ * @param[in] name Name to find the member
+ * @param[in] ... Variable arguments
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The variable argument is dependent on chosen member type. The list
@@ -3326,8 +3333,9 @@ static inline Eina_Bool eina_value_struct_set(Eina_Value *value,
 /**
  * @brief Gets the generic value from a struct member.
  *
- * @param value Source value object
- * @param name Name to find the member
+ * @param[in] value Source value object
+ * @param[in] name Name to find the member
+ * @param[out] ... Variable arguments
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, the
@@ -3398,9 +3406,9 @@ static inline Eina_Bool eina_value_struct_get(const Eina_Value *value,
 /**
  * @brief Sets the generic value in a struct member.
  *
- * @param value Source value object
- * @param name Name to find the member
- * @param args Variable argument
+ * @param[in,out] value Source value object
+ * @param[in] name Name to find the member
+ * @param[in] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_value_struct_set()
@@ -3416,9 +3424,9 @@ static inline Eina_Bool eina_value_struct_vset(Eina_Value *value,
 /**
  * @brief Gets the generic value from a struct member.
  *
- * @param value Source value object
- * @param name Name to find the member
- * @param args Variable argument
+ * @param[in] value Source value object
+ * @param[in] name Name to find the member
+ * @param[in,out] args Variable argument
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in the variable argument parameter, the
@@ -3439,9 +3447,9 @@ static inline Eina_Bool eina_value_struct_vget(const Eina_Value *value,
 /**
  * @brief Sets the generic value in a struct member from pointer.
  *
- * @param value Source value object
- * @param name Name to find the member
- * @param ptr Pointer to specify the contents.
+ * @param[in,out] value Source value object
+ * @param[in] name Name to find the member
+ * @param[in] ptr Pointer to specify the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The pointer type is dependent on chosen value type. The list for
@@ -3510,9 +3518,9 @@ static inline Eina_Bool eina_value_struct_pset(Eina_Value *value,
 /**
  * @brief Gets the generic value to pointer from a struct member.
  *
- * @param value Source value object
- * @param name Name to find the member
- * @param ptr Pointer to receive the contents.
+ * @param[in] value Source value object
+ * @param[in] name Name to find the member
+ * @param[out] ptr Pointer to receive the contents.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The value is returned in pointer contents, the actual value is
@@ -3583,9 +3591,9 @@ static inline Eina_Bool eina_value_struct_pget(const Eina_Value *value,
 /**
  * @brief Gets the member as Eina_Value copy
  *
- * @param src Source value object
- * @param name Name to find the member
- * @param dst Where to return the member value.
+ * @param[in] src Source value object
+ * @param[in] name Name to find the member
+ * @param[out] dst Where to return the member value.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The argument @a dst is considered uninitialized and it's setup to
@@ -3600,9 +3608,9 @@ static inline Eina_Bool eina_value_struct_value_get(const Eina_Value *src,
 /**
  * @brief Sets the member from Eina_Value source.
  *
- * @param dst destination value object
- * @param name name to find the member
- * @param src source value
+ * @param[in,out] dst destination value object
+ * @param[in] name name to find the member
+ * @param[in] src source value
  * @return #EINA_TRUE on success, #EINA_FALSE on failure.
  *
  * @since 1.2
@@ -3614,9 +3622,9 @@ static inline Eina_Bool eina_value_struct_value_set(Eina_Value *dst,
 /**
  * @brief Gets the member as Eina_Value copy given its member description.
  *
- * @param src Source value object
- * @param member The member description to use
- * @param dst Where to return the member value.
+ * @param[in] src Source value object
+ * @param[in] member The member description to use
+ * @param[out] dst Where to return the member value.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * The argument @a dst is considered uninitialized and it's setup to
@@ -3631,9 +3639,9 @@ static inline Eina_Bool eina_value_struct_member_value_get(const Eina_Value *src
 /**
  * @brief Sets the member from Eina_Value source.
  *
- * @param dst destination value object
- * @param member the member description to use
- * @param src source value
+ * @param[out] dst destination value object
+ * @param[in] member the member description to use
+ * @param[in] src source value
  * @return #EINA_TRUE on success, #EINA_FALSE on failure.
  *
  * @since 1.2
@@ -3685,7 +3693,7 @@ struct _Eina_Value_Type
 /**
  * @brief Queries type name.
  *
- * @param type type reference.
+ * @param[in] type type reference.
  * @return string or @c NULL if type is invalid.
  *
  * @since 1.2
@@ -3695,7 +3703,7 @@ EAPI const char *eina_value_type_name_get(const Eina_Value_Type *type) EINA_PURE
 /**
  * @brief Checks if type is valid.
  *
- * @param type Type reference.
+ * @param[in] type Type reference.
  * @return #EINA_TRUE if valid, #EINA_FALSE otherwise.
  *
  * A type is invalid if it's NULL or if version field is not the same
@@ -3708,8 +3716,8 @@ EAPI Eina_Bool eina_value_type_check(const Eina_Value_Type *type) EINA_PURE EINA
 /**
  * @brief Initializes memory using type descriptor.
  *
- * @param type type reference.
- * @param mem memory to operate, must be of size @c type->value_size.
+ * @param[in] type type reference.
+ * @param[out] mem memory to operate, must be of size @c type->value_size.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3719,8 +3727,8 @@ static inline Eina_Bool eina_value_type_setup(const Eina_Value_Type *type, void
 /**
  * @brief Flushes (clears) memory using type descriptor.
  *
- * @param type type reference.
- * @param mem memory to operate, must be of size @c type->value_size.
+ * @param[in] type type reference.
+ * @param[out] mem memory to operate, must be of size @c type->value_size.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3730,9 +3738,9 @@ static inline Eina_Bool eina_value_type_flush(const Eina_Value_Type *type, void
 /**
  * @brief Copies memory using type descriptor.
  *
- * @param type type reference.
- * @param src memory to operate, must be of size @c type->value_size.
- * @param dst memory to operate, must be of size @c type->value_size.
+ * @param[in] type type reference.
+ * @param[in] src memory to operate, must be of size @c type->value_size.
+ * @param[out] dst memory to operate, must be of size @c type->value_size.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3742,9 +3750,9 @@ static inline Eina_Bool eina_value_type_copy(const Eina_Value_Type *type, const
 /**
  * @brief Compares memory using type descriptor.
  *
- * @param type type reference.
- * @param a memory to operate, must be of size @c type->value_size.
- * @param b memory to operate, must be of size @c type->value_size.
+ * @param[in] type type reference.
+ * @param[in] a memory to operate, must be of size @c type->value_size.
+ * @param[in] b memory to operate, must be of size @c type->value_size.
  * @return less than zero if a < b, greater than zero if a > b, zero if equal.
  *
  * @since 1.2
@@ -3754,10 +3762,10 @@ static inline int eina_value_type_compare(const Eina_Value_Type *type, const voi
 /**
  * @brief Converts memory using type descriptor.
  *
- * @param type type reference of the source.
- * @param convert type reference of the destination.
- * @param type_mem memory to operate, must be of size @c type->value_size.
- * @param convert_mem memory to operate, must be of size @c convert->value_size.
+ * @param[in] type type reference of the source.
+ * @param[in] convert type reference of the destination.
+ * @param[in] type_mem memory to operate, must be of size @c type->value_size.
+ * @param[out] convert_mem memory to operate, must be of size @c convert->value_size.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3767,10 +3775,10 @@ static inline Eina_Bool eina_value_type_convert_to(const Eina_Value_Type *type,
 /**
  * @brief Converts memory using type descriptor.
  *
- * @param type type reference of the destination.
- * @param convert type reference of the source.
- * @param type_mem memory to operate, must be of size @c type->value_size.
- * @param convert_mem memory to operate, must be of size @c convert->value_size.
+ * @param[in] type type reference of the destination.
+ * @param[in] convert type reference of the source.
+ * @param[out] type_mem memory to operate, must be of size @c type->value_size.
+ * @param[in] convert_mem memory to operate, must be of size @c convert->value_size.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3780,9 +3788,9 @@ static inline Eina_Bool eina_value_type_convert_from(const Eina_Value_Type *type
 /**
  * @brief Sets memory using type descriptor and variable argument.
  *
- * @param type type reference of the source.
- * @param mem memory to operate, must be of size @c type->value_size.
- * @param args input value.
+ * @param[in] type type reference of the source.
+ * @param[out] mem memory to operate, must be of size @c type->value_size.
+ * @param[in] args input value.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3792,9 +3800,9 @@ static inline Eina_Bool eina_value_type_vset(const Eina_Value_Type *type, void *
 /**
  * @brief Sets memory using type descriptor and pointer.
  *
- * @param type type reference of the source.
- * @param mem memory to operate, must be of size @c type->value_size.
- * @param ptr pointer to input value.
+ * @param[in] type type reference of the source.
+ * @param[out] mem memory to operate, must be of size @c type->value_size.
+ * @param[in] ptr pointer to input value.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3804,9 +3812,9 @@ static inline Eina_Bool eina_value_type_pset(const Eina_Value_Type *type, void *
 /**
  * @brief Gets memory using type descriptor.
  *
- * @param type type reference of the source.
- * @param mem memory to operate, must be of size @c type->value_size.
- * @param ptr pointer to output.
+ * @param[in] type type reference of the source.
+ * @param[in] mem memory to operate, must be of size @c type->value_size.
+ * @param[out] ptr pointer to output.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.2
@@ -3850,8 +3858,8 @@ static inline Eina_Value *eina_value_optional_empty_new(void);
 /**
  * @brief Creates an optional eina value with the passed value
  *
- * @param subtype Eina_Value_Type of parameter value
- * @param value The value to be used to construct optional eina value
+ * @param[in] subtype Eina_Value_Type of parameter value
+ * @param[in] value The value to be used to construct optional eina value
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.17
@@ -3862,8 +3870,8 @@ EAPI Eina_Value *eina_value_optional_new(const Eina_Value_Type *subtype,
 /**
  * @brief Function to know if an eina optional is empty or not
  *
- * @param value Eina Value Optional
- * @param is_empty #EINA_TRUE if optional is empty, #EINA_FALSE otherwise.
+ * @param[in] value Eina Value Optional
+ * @param[out] is_empty #EINA_TRUE if optional is empty, #EINA_FALSE otherwise.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.17
@@ -3874,9 +3882,9 @@ static inline Eina_Bool eina_value_optional_empty_is(const Eina_Value *value,
 /**
  * @brief Sets the optional with a value
  *
- * @param value Eina Value Optional to be set with subvalue
- * @param subtype Type of subvalue
- * @param subvalue Value to be set in optional
+ * @param[in,out] value Eina Value Optional to be set with subvalue
+ * @param[in] subtype Type of subvalue
+ * @param[in] subvalue Value to be set in optional
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.17
@@ -3888,8 +3896,8 @@ EAPI Eina_Bool eina_value_optional_pset(Eina_Value *value,
 /**
  * @brief Gets the value from an optional
  *
- * @param value Eina Value Optional to get value from
- * @param subvalue Pointer to where value is to be copied to. You must use
+ * @param[in] value Eina Value Optional to get value from
+ * @param[out] subvalue Pointer to where value is to be copied to. You must use
  * the correct type according to eina_value_optional_type_get
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
@@ -3901,7 +3909,7 @@ EAPI Eina_Bool eina_value_optional_pget(Eina_Value *value,
 /**
  * @brief Resets eina optional to empty
  *
- * @param value Eina Value Optional
+ * @param[in,out] value Eina Value Optional
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.17
@@ -3911,7 +3919,8 @@ EAPI Eina_Bool eina_value_optional_reset(Eina_Value *value) EINA_ARG_NONNULL(1);
 /**
  *
  * @brief Gets type from value that is stored on Eina Value Optional
- * @param value Eina Value Optional
+ *
+ * @param[in] value Eina Value Optional
  * @return The optional sub-type.
  *
  * @since 1.17
diff --git a/src/lib/eina/eina_vector.h b/src/lib/eina/eina_vector.h
index 039114b8f1..df4508b675 100644
--- a/src/lib/eina/eina_vector.h
+++ b/src/lib/eina/eina_vector.h
@@ -64,9 +64,9 @@ struct _Eina_Vector3
 /**
  * @brief Set parameters to vector.
  *
- * @param dst The resulting vector.
- * @param x The x component.
- * @param y The y component.
+ * @param[out] dst The resulting vector.
+ * @param[in] x The x component.
+ * @param[in] y The y component.
  *
  * @since 1.17
  */
@@ -75,8 +75,8 @@ static inline void eina_vector2_set(Eina_Vector2 *dst, double x, double y);
 /**
  * @brief Set array to vector.
  *
- * @param dst The resulting vector.
- * @param v The the array[2] for set.
+ * @param[out] dst The resulting vector.
+ * @param[in] v The the array[2] for set.
  *
  * Set to vector first 2 elements from array.
  *
@@ -87,8 +87,8 @@ static inline void eina_vector2_array_set(Eina_Vector2 *dst, const double *v);
 /**
  * @brief Copy vector.
  *
- * @param dst The vector copy.
- * @param src The vector for copy.
+ * @param[out] dst The vector copy.
+ * @param[in] src The vector for copy.
  *
  * @since 1.17
  */
@@ -97,8 +97,8 @@ static inline void eina_vector2_copy(Eina_Vector2 *dst, const Eina_Vector2 *src)
 /**
  * @brief Make negative vector.
  *
- * @param out The resulting vector.
- * @param v The current vector.
+ * @param[out] out The resulting vector.
+ * @param[in] v The current vector.
  *
  * @since 1.17
  */
@@ -107,9 +107,9 @@ static inline void eina_vector2_negate(Eina_Vector2 *out, const Eina_Vector2 *v)
 /**
  * @brief Add two vectors.
  *
- * @param out The resulting vector.
- * @param a The first member of the add.
- * @param b The second member of the add.
+ * @param[out] out The resulting vector.
+ * @param[in] a The first member of the add.
+ * @param[in] b The second member of the add.
  *
  * @since 1.17
  */
@@ -118,9 +118,9 @@ static inline void eina_vector2_add(Eina_Vector2 *out, const Eina_Vector2 *a, co
 /**
  * @brief Subtract two vectors
  *
- * @param out The resulting vector
- * @param a The first member of the subtract
- * @param b The second member of the subtract
+ * @param[out] out The resulting vector
+ * @param[in] a The first member of the subtract
+ * @param[in] b The second member of the subtract
  *
  * @since 1.17
  */
@@ -129,9 +129,9 @@ static inline void eina_vector2_subtract(Eina_Vector2 *out, const Eina_Vector2 *
 /**
  * @brief Scale vector.
  *
- * @param out The resulting vector.
- * @param v The vector for scale.
- * @param scale The scale value.
+ * @param[out] out The resulting vector.
+ * @param[in] v The vector for scale.
+ * @param[in] scale The scale value.
  *
  * @since 1.17
  */
@@ -140,8 +140,8 @@ static inline void eina_vector2_scale(Eina_Vector2 *out, const Eina_Vector2 *v,
 /**
  * @brief Return the dot product of the two vectors.
  *
- * @param a The first member.
- * @param b The second member.
+ * @param[in] a The first member.
+ * @param[in] b The second member.
  * @return The dot product.
  *
  * @since 1.17
@@ -151,7 +151,7 @@ static inline double eina_vector2_dot_product(const Eina_Vector2 *a, const Eina_
 /**
  * @brief Return the length of the given vector.
  *
- * @param v The vector.
+ * @param[in] v The vector.
  * @return The length.
  *
  * @since 1.17
@@ -161,7 +161,7 @@ static inline double eina_vector2_length_get(const Eina_Vector2 *v);
 /**
  * @brief Return the length in square of the given vector.
  *
- * @param v The vector.
+ * @param[in] v The vector.
  * @return The length in square.
  *
  * @since 1.17
@@ -171,8 +171,8 @@ static inline double eina_vector2_length_square_get(const Eina_Vector2 *v);
 /**
  * @brief Return the distance between of two vectors.
  *
- * @param a The first vector.
- * @param b The second vector.
+ * @param[in] a The first vector.
+ * @param[in] b The second vector.
  * @return The distance.
  *
  * @since 1.17
@@ -182,8 +182,8 @@ static inline double eina_vector2_distance_get(const Eina_Vector2 *a, const Eina
 /**
  * @brief Return the distance in square between of two vectors.
  *
- * @param a The first vector.
- * @param b The second vector.
+ * @param[in] a The first vector.
+ * @param[in] b The second vector.
  * @return The distance in square.
  *
  * @since 1.17
@@ -193,8 +193,8 @@ static inline double eina_vector2_distance_square_get(const Eina_Vector2 *a, con
 /**
  * @brief normalize vector.
  *
- * @param out The resulting vector.
- * @param v The vector for normalize.
+ * @param[out] out The resulting vector.
+ * @param[in] v The vector for normalize.
  *
  * @since 1.17
  */
@@ -203,9 +203,9 @@ static inline void eina_vector2_normalize(Eina_Vector2 *out, const Eina_Vector2
 /**
  * @brief Transform vector.
  *
- * @param out The resulting vector.
- * @param m The matrix for transform.
- * @param v The vector for transform.
+ * @param[out] out The resulting vector.
+ * @param[in] m The matrix for transform.
+ * @param[in] v The vector for transform.
  *
  * @since 1.17
  */
@@ -214,9 +214,9 @@ static inline void eina_vector2_transform(Eina_Vector2 *out, const Eina_Matrix2
 /**
  * @brief Homogeneous position transform vector.
  *
- * @param out The resulting vector.
- * @param m The matrix for transform.
- * @param v The vector for transform.
+ * @param[out] out The resulting vector.
+ * @param[in] m The matrix for transform.
+ * @param[in] v The vector for transform.
  *
  * @since 1.17
  */
@@ -225,9 +225,9 @@ static inline void eina_vector2_homogeneous_position_transform(Eina_Vector2 *out
 /**
  * @brief Homogeneous direction transform vector.
  *
- * @param out The resulting vector.
- * @param m The matrix for transform.
- * @param v The vector for transform.
+ * @param[out] out The resulting vector.
+ * @param[in] m The matrix for transform.
+ * @param[in] v The vector for transform.
  *
  * @since 1.17
  */
@@ -236,10 +236,10 @@ static inline void eina_vector2_homogeneous_direction_transform(Eina_Vector2 *ou
 /**
  * @brief Set parameters to vector.
  *
- * @param dst The resulting vector.
- * @param x The x component.
- * @param y The y component.
- * @param z The z component.
+ * @param[out] dst The resulting vector.
+ * @param[in] x The x component.
+ * @param[in] y The y component.
+ * @param[in] z The z component.
  *
  * @since 1.18
  */
@@ -248,8 +248,8 @@ static inline void eina_vector3_set(Eina_Vector3 *dst, double x, double y, doubl
 /**
  * @brief Set array to vector.
  *
- * @param dst The resulting vector.
- * @param v The the array[3] for set.
+ * @param[out] dst The resulting vector.
+ * @param[in] v The the array[3] for set.
  *
  * Set to vector first 3 elements from array.
  *
@@ -260,8 +260,8 @@ static inline void eina_vector3_array_set(Eina_Vector3 *dst, const double *v);
 /**
  * @brief Copy vector.
  *
- * @param dst The vector copy.
- * @param src The vector for copy.
+ * @param[out] dst The vector copy.
+ * @param[in] src The vector for copy.
  *
  * @since 1.18
  */
@@ -270,8 +270,8 @@ static inline void eina_vector3_copy(Eina_Vector3 *dst, const Eina_Vector3 *src)
 /**
  * @brief Make negative vector.
  *
- * @param out The resulting vector.
- * @param v The current vector.
+ * @param[out] out The resulting vector.
+ * @param[in] v The current vector.
  *
  * @since 1.18
  */
@@ -280,9 +280,9 @@ static inline void eina_vector3_negate(Eina_Vector3 *out, const Eina_Vector3 *v)
 /**
  * @brief Add two vectors.
  *
- * @param out The resulting vector.
- * @param a The first member of the add.
- * @param b The second member of the add.
+ * @param[out] out The resulting vector.
+ * @param[in] a The first member of the add.
+ * @param[in] b The second member of the add.
  *
  * @since 1.18
  */
@@ -292,9 +292,9 @@ static inline void eina_vector3_add(Eina_Vector3 *out, const Eina_Vector3 *a,
 /**
  * @brief Subtract two vectors
  *
- * @param out The resulting vector
- * @param a The first member of the subtract
- * @param b The second member of the subtract
+ * @param[out] out The resulting vector
+ * @param[in] a The first member of the subtract
+ * @param[in] b The second member of the subtract
  *
  * @since 1.18
  */
@@ -304,9 +304,9 @@ static inline void eina_vector3_subtract(Eina_Vector3 *out, const Eina_Vector3 *
 /**
  * @brief Scale vector.
  *
- * @param out The resulting vector.
- * @param v The vector for scale.
- * @param scale The scale value.
+ * @param[out] out The resulting vector.
+ * @param[in] v The vector for scale.
+ * @param[in] scale The scale value.
  *
  * @since 1.18
  */
@@ -315,9 +315,9 @@ static inline void eina_vector3_scale(Eina_Vector3 *out, const Eina_Vector3 *v,
 /**
  * @brief Multiply two vectors
  *
- * @param out The resulting vector
- * @param a The first member
- * @param b The second member
+ * @param[out] out The resulting vector
+ * @param[in] a The first member
+ * @param[in] b The second member
  *
  * @since 1.18
  */
@@ -327,8 +327,8 @@ static inline void eina_vector3_multiply(Eina_Vector3 *out, const Eina_Vector3 *
 /**
  * @brief Return the dot product of the two vectors.
  *
- * @param a The first member.
- * @param b The second member.
+ * @param[in] a The first member.
+ * @param[in] b The second member.
  * @return The dot product.
  *
  * @since 1.18
@@ -338,9 +338,9 @@ static inline double eina_vector3_dot_product(const Eina_Vector3 *a, const Eina_
 /**
  * @brief Create the cross product of the two vectors.
  *
- * @param out The resulting vector.
- * @param a The first member.
- * @param b The second member.
+ * @param[out] out The resulting vector.
+ * @param[in] a The first member.
+ * @param[in] b The second member.
  *
  * @since 1.18
  */
@@ -350,7 +350,7 @@ static inline void eina_vector3_cross_product(Eina_Vector3 *out, const Eina_Vect
 /**
  * @brief Return the length of the given vector.
  *
- * @param v The vector.
+ * @param[in] v The vector.
  * @return The length.
  *
  * @since 1.18
@@ -360,7 +360,7 @@ static inline double eina_vector3_length_get(const Eina_Vector3 *v);
 /**
  * @brief Return the length in square of the given vector.
  *
- * @param v The vector.
+ * @param[in] v The vector.
  * @return The length in square.
  *
  * @since 1.18
@@ -370,8 +370,8 @@ static inline double eina_vector3_length_square_get(const Eina_Vector3 *v);
 /**
  * @brief Return the distance between of two vectors.
  *
- * @param a The first vector.
- * @param b The second vector.
+ * @param[in] a The first vector.
+ * @param[in] b The second vector.
  * @return The distance.
  *
  * @since 1.18
@@ -381,8 +381,8 @@ static inline double eina_vector3_distance_get(const Eina_Vector3 *a, const Eina
 /**
  * @brief Return the distance in square between of two vectors.
  *
- * @param a The first vector.
- * @param b The second vector.
+ * @param[in] a The first vector.
+ * @param[in] b The second vector.
  * @return The distance in square.
  *
  * @since 1.18
@@ -393,8 +393,8 @@ static inline double eina_vector3_distance_square_get(const Eina_Vector3 *a,
 /**
  * @brief Return the angle between of two vectors.
  *
- * @param a The first vector.
- * @param b The second vector.
+ * @param[in] a The first vector.
+ * @param[in] b The second vector.
  * @return The angle.
  *
  * @since 1.18
@@ -404,8 +404,8 @@ static inline double eina_vector3_angle_get(const Eina_Vector3 *a, const Eina_Ve
 /**
  * @brief normalize vector.
  *
- * @param out The resulting vector.
- * @param v The not NULL vector for normalize.
+ * @param[out] out The resulting vector.
+ * @param[in] v The not NULL vector for normalize.
  *
  * @since 1.18
  */
@@ -414,9 +414,9 @@ static inline void eina_vector3_normalize(Eina_Vector3 *out, const Eina_Vector3
 /**
  * @brief Transform vector.
  *
- * @param out The resulting vector.
- * @param m The matrix for transform.
- * @param v The vector for transform.
+ * @param[out] out The resulting vector.
+ * @param[in] m The matrix for transform.
+ * @param[in] v The vector for transform.
  *
  * @since 1.18
  */
@@ -426,9 +426,9 @@ static inline void eina_vector3_transform(Eina_Vector3 *out, const Eina_Matrix3
 /**
  * @brief Homogeneous direction transform vector.
  *
- * @param out The resulting vector.
- * @param m The matrix for transform.
- * @param v The vector for transform.
+ * @param[out] out The resulting vector.
+ * @param[in] m The matrix for transform.
+ * @param[in] v The vector for transform.
  *
  * @since 1.18
  */
@@ -438,9 +438,9 @@ static inline void eina_vector3_homogeneous_direction_transform(Eina_Vector3 *ou
 /**
  * @brief Homogeneous position transform vector.
  *
- * @param out The resulting vector.
- * @param m The matrix for transform.
- * @param v The vector for transform.
+ * @param[out] out The resulting vector.
+ * @param[in] m The matrix for transform.
+ * @param[in] v The vector for transform.
  *
  * @since 1.18
  */
@@ -451,9 +451,9 @@ static inline void eina_vector3_homogeneous_position_transform(Eina_Vector3 *out
 /**
  * @brief Rotate vector.
  *
- * @param out The resulting vector.
- * @param v The vector for rotate.
- * @param q The quaternion in radians for rotate.
+ * @param[out] out The resulting vector.
+ * @param[in] v The vector for rotate.
+ * @param[in] q The quaternion in radians for rotate.
  *
  * @since 1.18
  */
@@ -463,9 +463,9 @@ static inline void eina_vector3_quaternion_rotate(Eina_Vector3 *out, const Eina_
 /**
  * @brief Create orthogonal projection on plane between vector and normal.
  *
- * @param out The resulting vector.
- * @param v The vector for projection.
- * @param normal The normal for projection.
+ * @param[out] out The resulting vector.
+ * @param[in] v The vector for projection.
+ * @param[in] normal The normal for projection.
  *
  * @since 1.18
  */
@@ -475,10 +475,10 @@ static inline void eina_vector3_orthogonal_projection_on_plane(Eina_Vector3 *out
 /**
  * @brief Plane by points between three vectors.
  *
- * @param out The resulting quaternion of plane.
- * @param a The first member.
- * @param b The second member.
- * @param c The third member.
+ * @param[out] out The resulting quaternion of plane.
+ * @param[in] a The first member.
+ * @param[in] b The second member.
+ * @param[in] c The third member.
  *
  * @since 1.18
  */
@@ -488,8 +488,8 @@ static inline void eina_vector3_plane_by_points(Eina_Quaternion *out, const Eina
 /**
  * @brief Homogeneous position set.
  *
- * @param out The resulting vector.
- * @param v The quaternion for position.
+ * @param[out] out The resulting vector.
+ * @param[in] v The quaternion for position.
  *
  * @since 1.18
  */
@@ -498,8 +498,8 @@ static inline void eina_vector3_homogeneous_position_set(Eina_Vector3 *out, cons
 /**
  * @brief Homogeneous direction set.
  *
- * @param out The resulting vector.
- * @param v The quaternion for direction.
+ * @param[out] out The resulting vector.
+ * @param[in] v The quaternion for direction.
  *
  * @since 1.18
  */
@@ -508,8 +508,8 @@ static inline void eina_vector3_homogeneous_direction_set(Eina_Vector3 *out, con
 /**
  * @brief Check the equivalent between of two vectors.
  *
- * @param a The first vector.
- * @param b The second vector.
+ * @param[in] a The first vector.
+ * @param[in] b The second vector.
  * @return The EINA_TRUE if equivalent.
  *
  * @since 1.18
@@ -519,12 +519,12 @@ static inline Eina_Bool eina_vector3_equivalent(Eina_Vector3 *a, const Eina_Vect
 /**
  * @brief Check the equivalent between of two triangles of vectors.
  *
- * @param v0 The first member of first triangle.
- * @param v1 The second member of first triangle.
- * @param v2 The third member of first triangle.
- * @param w0 The first member of second triangle.
- * @param w1 The second member of second triangle.
- * @param w2 The third member of second triangle.
+ * @param[in] v0 The first member of first triangle.
+ * @param[in] v1 The second member of first triangle.
+ * @param[in] v2 The third member of first triangle.
+ * @param[in] w0 The first member of second triangle.
+ * @param[in] w1 The second member of second triangle.
+ * @param[in] w2 The third member of second triangle.
  * @return The EINA_TRUE if equivalent.
  *
  * @since 1.18
diff --git a/src/lib/eina/eina_vpath.h b/src/lib/eina/eina_vpath.h
index 44b172c38c..788ff3602a 100644
--- a/src/lib/eina/eina_vpath.h
+++ b/src/lib/eina/eina_vpath.h
@@ -84,9 +84,10 @@
  */
 typedef const char * Eina_Vpath;
 
-/*
+/**
  * Translate a virtual path into a normal path.
  *
+ * @param[in] path The path.
  * @return NULL if failed, or a full normal string file path that is resolved
  *
  * @since 1.21
@@ -94,13 +95,13 @@ typedef const char * Eina_Vpath;
  */
 EAPI char *eina_vpath_resolve(Eina_Vpath path);
 
-/*
+/**
  * Translate a virtual path into a normal path, and print it into str.
  *
- * @param str the buffer to stuff the characters into
- * @param size the size of the buffer
- * @param format A snprintf style format string, which will get evaluated after the vpath strings are getting replaced
- * @param ... The arguments for the format string
+ * @param[out] str the buffer to stuff the characters into
+ * @param[in] size the size of the buffer
+ * @param[in] format A snprintf style format string, which will get evaluated after the vpath strings are getting replaced
+ * @param[in] ... The arguments for the format string
  *
  * @return the number of characters that are written into str, on a error a value < 0 is returned.
  *
diff --git a/src/lib/eina/eina_xattr.h b/src/lib/eina/eina_xattr.h
index a31fcfae8e..711c40e86f 100644
--- a/src/lib/eina/eina_xattr.h
+++ b/src/lib/eina/eina_xattr.h
@@ -53,7 +53,7 @@ struct _Eina_Xattr
 /**
  * @brief Gets an iterator that lists all extended attribute of a file.
  *
- * @param file The filename to retrieve the extended attribute list from.
+ * @param[in] file The filename to retrieve the extended attribute list from.
  * @return an iterator.
  *
  * The iterator will not allocate any data during the iteration step, so you need to copy them yourself
@@ -66,7 +66,7 @@ EAPI Eina_Iterator *eina_xattr_ls(const char *file) EINA_ARG_NONNULL(1) EINA_WAR
 /**
  * @brief Gets an iterator that list all extended attribute value related to a fd.
  *
- * @param file The filename to retrieve the extended attribute list from.
+ * @param[in] file The filename to retrieve the extended attribute list from.
  * @return An iterator.
  *
  * The iterator will not allocate any data during the iteration step, so you need to copy them yourself
@@ -79,7 +79,7 @@ EAPI Eina_Iterator *eina_xattr_value_ls(const char *file) EINA_ARG_NONNULL(1) EI
 /**
  * @brief Gets an iterator that list all extended attribute related to a fd.
  *
- * @param fd The file descriptor to retrieve the extended attribute list from.
+ * @param[in] fd The file descriptor to retrieve the extended attribute list from.
  * @return an iterator.
  *
  * The iterator will not allocate any data during the iteration step, so you need to copy them yourself
@@ -92,7 +92,7 @@ EAPI Eina_Iterator *eina_xattr_fd_ls(int fd) EINA_WARN_UNUSED_RESULT;
 /**
  * @brief Gets an iterator that list all extended attribute value related to a fd.
  *
- * @param fd The file descriptor to retrieve the extended attribute list from.
+ * @param[in] fd The file descriptor to retrieve the extended attribute list from.
  * @return An iterator.
  *
  * The iterator will not allocate any data during the iteration step, so you need to copy them yourself
@@ -105,8 +105,8 @@ EAPI Eina_Iterator *eina_xattr_value_fd_ls(int fd) EINA_WARN_UNUSED_RESULT;
 /**
  * @brief Copies the extended attribute from one file to another.
  *
- * @param src source file to use as input.
- * @param dst destination file to use as output.
+ * @param[in] src source file to use as input.
+ * @param[in] dst destination file to use as output.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_xattr_fd_copy()
@@ -118,8 +118,8 @@ EAPI Eina_Bool eina_xattr_copy(const char *src, const char *dst) EINA_ARG_NONNUL
 /**
  * @brief Copies the extended attribute from one file descriptor to another.
  *
- * @param src source file descriptor to use as input.
- * @param dst destination file descriptor to use as output.
+ * @param[in] src source file descriptor to use as input.
+ * @param[in] dst destination file descriptor to use as output.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @see eina_xattr_copy()
@@ -131,9 +131,9 @@ EAPI Eina_Bool eina_xattr_fd_copy(int src, int dst);
 /**
  * @brief Retrieves an extended attribute from a file.
  *
- * @param file The file to retrieve the extended attribute from.
- * @param attribute The extended attribute name to retrieve.
- * @param size The size of the retrieved extended attribute.
+ * @param[in] file The file to retrieve the extended attribute from.
+ * @param[in] attribute The extended attribute name to retrieve.
+ * @param[out] size The size of the retrieved extended attribute.
  * @return the allocated data that hold the extended attribute value.
  *
  * It will return @c NULL and *size will be @c 0 if it fails.
@@ -145,9 +145,9 @@ EAPI void *eina_xattr_get(const char *file, const char *attribute, ssize_t *size
 /**
  * @brief Retrieves an extended attribute from a file descriptor.
  *
- * @param fd The file descriptor to retrieve the extended attribute from.
- * @param attribute The extended attribute name to retrieve.
- * @param size The size of the retrieved extended attribute.
+ * @param[in] fd The file descriptor to retrieve the extended attribute from.
+ * @param[in] attribute The extended attribute name to retrieve.
+ * @param[out] size The size of the retrieved extended attribute.
  * @return the allocated data that hold the extended attribute value.
  *
  * It will return @c NULL and *size will be @c 0 if it fails.
@@ -159,11 +159,11 @@ EAPI void *eina_xattr_fd_get(int fd, const char *attribute, ssize_t *size) EINA_
 /**
  * @brief Sets an extended attribute on a file.
  *
- * @param file The file to set the extended attribute to.
- * @param attribute The attribute to set.
- * @param data The data to set.
- * @param length The length of the data to set.
- * @param flags Define the set policy.
+ * @param[in] file The file to set the extended attribute to.
+ * @param[in] attribute The attribute to set.
+ * @param[in] data The data to set.
+ * @param[in] length The length of the data to set.
+ * @param[in] flags Define the set policy.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.1
@@ -173,11 +173,11 @@ EAPI Eina_Bool eina_xattr_set(const char *file, const char *attribute, const voi
 /**
  * @brief Sets an extended attribute on a file descriptor.
  *
- * @param fd The file descriptor to set the extended attribute to.
- * @param attribute The attribute to set.
- * @param data The data to set.
- * @param length The length of the data to set.
- * @param flags Define the set policy.
+ * @param[in] fd The file descriptor to set the extended attribute to.
+ * @param[in] attribute The attribute to set.
+ * @param[in] data The data to set.
+ * @param[in] length The length of the data to set.
+ * @param[in] flags Define the set policy.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.8
@@ -188,8 +188,8 @@ EAPI Eina_Bool eina_xattr_fd_set(int fd, const char *attribute, const void *data
 /**
  * @brief Deletes (removes) an extended attribute from a file.
  *
- * @param file The file to del the extended attribute from.
- * @param attribute The attribute to del.
+ * @param[in] file The file to del the extended attribute from.
+ * @param[in] attribute The attribute to del.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.8
@@ -199,8 +199,8 @@ EAPI Eina_Bool eina_xattr_del(const char *file, const char *attribute) EINA_ARG_
 /**
  * @brief Deletes (removes) an extended attribute from a file descriptor.
  *
- * @param fd The file descriptor to del the extended attribute from.
- * @param attribute The attribute to del.
+ * @param[in] fd The file descriptor to del the extended attribute from.
+ * @param[in] attribute The attribute to del.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.8
@@ -210,10 +210,10 @@ EAPI Eina_Bool eina_xattr_fd_del(int fd, const char *attribute) EINA_ARG_NONNULL
 /**
  * @brief Sets a string as a extended attribute properties.
  *
- * @param file The file to set the string to.
- * @param attribute The attribute to set.
- * @param data The NULL-terminated string to set.
- * @param flags Define the set policy.
+ * @param[in] file The file to set the string to.
+ * @param[in] attribute The attribute to set.
+ * @param[in] data The NULL-terminated string to set.
+ * @param[in] flags Define the set policy.
  * @return EINA_TRUE on success, EINA_FALSE otherwise.
  *
  * @since 1.1
@@ -223,8 +223,8 @@ EAPI Eina_Bool eina_xattr_string_set(const char *file, const char *attribute, co
 /**
  * @brief Gets a string from an extended attribute properties.
  *
- * @param file The file to get the string from.
- * @param attribute The attribute to get.
+ * @param[in] file The file to get the string from.
+ * @param[in] attribute The attribute to get.
  * @return A valid string on success, @c NULL otherwise.
  *
  * This call check that the string is properly NULL-terminated before returning it.
@@ -236,10 +236,10 @@ EAPI char *eina_xattr_string_get(const char *file, const char *attribute);
 /**
  * @brief Sets a double as a extended attribute properties.
  *
- * @param file The file to set the double to.
- * @param attribute The attribute to set.
- * @param value The NULL-terminated double to set.
- * @param flags Define the set policy.
+ * @param[in] file The file to set the double to.
+ * @param[in] attribute The attribute to set.
+ * @param[in] value The NULL-terminated double to set.
+ * @param[in] flags Define the set policy.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.1
@@ -249,9 +249,9 @@ EAPI Eina_Bool eina_xattr_double_set(const char *file, const char *attribute, do
 /**
  * @brief Gets a double from an extended attribute properties.
  *
- * @param file The file to get the string from.
- * @param attribute The attribute to get.
- * @param value Where to put the extracted value
+ * @param[in] file The file to get the string from.
+ * @param[in] attribute The attribute to get.
+ * @param[out] value Where to put the extracted value
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * This call check that the double is correctly set.
@@ -263,10 +263,10 @@ EAPI Eina_Bool eina_xattr_double_get(const char *file, const char *attribute, do
 /**
  * @brief Sets an int as a extended attribute properties.
  *
- * @param file The file to set the int to.
- * @param attribute The attribute to set.
- * @param value The NULL-terminated int to set.
- * @param flags Define the set policy.
+ * @param[in] file The file to set the int to.
+ * @param[in] attribute The attribute to set.
+ * @param[in] value The NULL-terminated int to set.
+ * @param[in] flags Define the set policy.
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * @since 1.1
@@ -276,9 +276,9 @@ EAPI Eina_Bool eina_xattr_int_set(const char *file, const char *attribute, int v
 /**
  * @brief Gets a int from an extended attribute properties.
  *
- * @param file The file to get the string from.
- * @param attribute The attribute to get.
- * @param value Where to put the extracted value
+ * @param[in] file The file to get the string from.
+ * @param[in] attribute The attribute to get.
+ * @param[out] value Where to put the extracted value
  * @return #EINA_TRUE on success, #EINA_FALSE otherwise.
  *
  * This call check that the int is correctly set.