3.22) The areas.

type gr_area =
  { ar_window : gr_window
  ; mutable ar_left : int
  ; mutable ar_top : int
  ; mutable ar_width : int
  ; mutable ar_height : int
  ; mutable ar_name : string
  }
;;
The area objects are rectangles with a title at the top right. They are useful to visualy group objects together.
The area variables are: The only related function is:
gr_draw_area : gr_area -> unit
gr_draw_area Area draws the area Area.