Section Header
    + name := G_WIN_IN_INTERN;
    - author := "Sonntag Benoit (bsonntag@loria.fr)";
    - comment := "For G_WIN_IN.";
Section Inherit
    + parent_g_group:Expanded G_GROUP;
Section Public
    + elevator_v:G_ELEVATOR;
    + elevator_h:G_ELEVATOR;
Creation.
    - make elt:G_EXPR <-
Fix position.
    - set_top <-
    - set_bottom <-
    - set_right <-
    - set_left <-
Update position.
    - set_position rac:AREA at (x,y:INTEGER) size (w,h:INTEGER) <-
    - update_intern <-
Display.
    - draw_slave bmp:ABSTRACT_BITMAP from (x0,y0:INTEGER) to (x1,y1:INTEGER) <-