collections {
   base_scale: 1.0;
   group { "main";
      parts {
         rect { "rect";
            desc { "default";
               rel1.relative: 0.0 0.0;
               rel2.relative: 1.0 0.5;
               color: 0 136 170 255;
            }
         }
         group { "group";
            source: "my_group";
            desc { "default";
               rel1.relative: 0.0 0.5;
               rel2.relative: 1.0 1.0;
            }
         }
      }
   }
   group { "my_group";
      parts {
         text { "text";
            scale: 1;
            effect: SOFT_OUTLINE;
            desc { "default";
               color: 255 255 255 255;
               color2: 0 136 170 100;
               text {
                  size: 30;
                  font: "Sans";
                  text: "My Group";
               }
            }
         }
      }
   }
}