Section Header
    + name := AI_OPERATION;
    - comment :="Operations of .AI document.";
    - version := 1;
Section Inherit
    - parent_object:OBJECT :=
Section Public
Draw.
    - draw_stroke b:BITMAP scale s:REAL_16_16 <-
    - draw_fill b:BITMAP scale s:REAL_16_16 <-
Display.
    - display <-