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