Bitmap
The Check-Box control is rendered like a 
bitmap Push-Button. It appears pressed when the Check-Box control is checked.
When the 
Title-Position property is set, both the graphics and the title are drawn. Otherwise, the title becomes the hint of the control.
 
Example - Define a check-box in screen section with style bitmap
screen section. ...   03 screen-1-cb-2 Check-Box      line 27.0      column 10.0      size 116      lines 31      id 11      title "Sugar for you coffee?"      bitmap      .  |