SO (Set Overlay)

This trial command may be used to define a permanent screen overlay which is added to each screen image. You may use this for displaying titles and other permanent messages.

The overlay is defined by means of a regular trial definition which will be executed at each new screen image for loading the overlay. All visual trial commands within this overlay trial are converted to timeless picture load actions. Screen operators are ignored. The trial must not contain other than visual related commands.

 SO [Trial [VarArgList]]

Defaults:

Trial - No argument disables screen overlay