Use this function to remove a invertarea of gfx mode from memory. The function demands the following parameters:
%CleanUp.InvertArea(Index)
Thereby the parameter Index can be one of the following values:
0... - numeric index value with range from 0 - (InvertAreaCount)-1
Last - last of all invertareas set by script is deleted
All  - all invertareas set by script are deleted
Example:
%CleanUp.InvertArea(All)