docs: tree wide enum sentinel value documentation

src/lib/efl/interfaces/efl_gfx_types.eot

@@ -23,7 +23,7 @@ enum Efl.Gfx.Colorspace {
 enum Efl.Gfx.Render_Op {
   blend = 0, [[Alpha blending onto destination (default); d = d*(1-sa) + s.]]
   copy  = 1, [[Copy source to destination; d = s.]]
-  last
+  last       [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Efl.Gfx.Path.Command_Type {
@@ -35,7 +35,7 @@ enum Efl.Gfx.Path.Command_Type {
   line_to,   [[The next point is used to draw a line from current point.]]
   cubic_to,  [[The next three point is used to draw a cubic bezier curve from current point.]]
   close,     [[Close the curent subpath by drawing a line between current point and the first point of current subpath.]]
-  last       [[Not a valid command, but last one according to this version header.]]
+  last       [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Efl.Gfx.Cap {
@@ -47,7 +47,7 @@ enum Efl.Gfx.Cap {
   butt = 0,  [[The end of lines is rendered as a full stop on the last point itself.]]
   round,     [[The end of lines is rendered as a half-circle around the last point.]]
   square,    [[The end of lines is rendered as a square around the last point.]]
-  last       [[End of enum value.]]
+  last       [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Efl.Gfx.Join
@@ -59,7 +59,7 @@ enum Efl.Gfx.Join
   miter = 0, [[Used to render rounded line joins. Circular arcs are used to join two lines smoothly.]]
   round, [[Used to render beveled line joins. The outer corner of the joined lines is filled by enclosing the triangular region of the corner with a straight line between the outer corners of each stroke.]]
   bevel, [[Used to render mitered line joins. The intersection of the strokes is clipped at a line perpendicular to the bisector of the angle between the strokes, at the distance from the intersection of the segments equal to the product of the miter limit value and the border radius.  This prevents long spikes being created.]]
-  last [[End of enum value]]
+  last [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Efl.Gfx.Gradient.Spread
@@ -71,7 +71,7 @@ enum Efl.Gfx.Gradient.Spread
   pad, [[The area is filled with the closest stop color. This is the default.]]
   reflect, [[The gradient is reflected outside the gradient area.]]
   repeat, [[The gradient is repeated outside the gradient area.]]
-  last [[End of enum value]]
+  last [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Efl.Gfx.Fill.Rule

src/lib/elementary/elm_gesture_layer.eo

@@ -16,7 +16,7 @@ enum Elm.Gesture.Type
    n_flicks, [[N fingers flick gesture]]
    zoom, [[Zoom]]
    rotate, [[Rotate]]
-   last
+   last [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Elm.Gesture.State

src/lib/elementary/elm_interface_scrollable.eo

@@ -14,7 +14,7 @@ enum Elm.Scroller.Policy
    auto = 0, [[Show scrollbars as needed]]
    on, [[Always show scrollbars]]
    off, [[Never show scrollbars]]
-   last
+   last [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Elm.Scroller.Single_Direction
@@ -26,7 +26,7 @@ enum Elm.Scroller.Single_Direction
    none = 0, [[Scroll every direction]]
    soft, [[Scroll single direction if the direction is certain]]
    hard, [[Scroll only single direction]]
-   last
+   last  [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Elm.Scroller.Movement_Block

src/lib/elementary/elm_map.eo

@@ -24,7 +24,7 @@ enum Elm.Map.Zoom_Mode
    manual,    [[Zoom controlled manually by elm_map_zoom_set(). It's set by default.]]
    auto_fit,  [[Zoom until map fits inside the scroll frame with no pixels outside this area.]]
    auto_fill, [[Zoom until map fills scroll, ensuring no pixels are left unfilled.]]
-   last
+   last       [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Elm.Map.Source_Type
@@ -39,7 +39,7 @@ enum Elm.Map.Source_Type
    tile,  [[Map tile provider.]]
    route, [[Route service provider.]]
    name,  [[Name service provider.]]
-   last
+   last   [[Sentinel value to indicate last enum field during iteration]]
 }
 
 enum Elm.Map.Route_Type
@@ -52,7 +52,7 @@ enum Elm.Map.Route_Type
    motocar, [[Route should consider an automobile will be used.]]
    bicycle, [[Route should consider a bicycle will be used by the user.]]
    foot,    [[Route should consider user will be walking.]]
-   last
+   last     [[Sentinel value to indicate last enum field during iteration]]
 }
 
 
@@ -65,7 +65,7 @@ enum Elm.Map.Route_Method
    ]]
    fastest,  [[Route should prioritize time.]]
    shortest, [[Route should prioritize distance.]]
-   last
+   last      [[Sentinel value to indicate last enum field during iteration]]
 }
 
 

src/lib/elementary/elm_photocam.eo

@@ -7,7 +7,7 @@ enum Elm.Photocam.Zoom_Mode
    auto_fit, [[Zoom until photo fits in photocam]]
    auto_fill, [[Zoom until photo fills photocam]]
    auto_fit_in, [[Zoom in until photo fits in photocam]]
-   last
+   last [[Sentinel value to indicate last enum field during iteration]]
 }
 
 class Elm.Photocam (Elm.Widget, Elm.Interface_Scrollable,