isCOBOL Evolve : User Interface : Controls Reference : CHECK-BOX : Styles : Flat
Flat
When this style is set, the Check-Box control has no 3-D effect. When the mouse pointer is moved over the Check-Box control, it is highlighted.
 
Example - Define a check-box in screen section with style flat
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?"
     flat
     .