type rectdef [display="Rect Definition"]
{
  // RectDef - 24 bytes
  f32 x [ui, readonly, display="X"];
  f32 y [ui, readonly, display="Y"];
  f32 w [ui, readonly, display="Width"];
  f32 h [ui, readonly, display="Height"];
  i32 horz_align [ui, readonly, display="Horz Align"];
  i32 vert_align [ui, readonly, display="Vert Align"];
}