Variable  | 
Initial Value  | 
Description  | 
GAutoScaleX GAutoScaleY  | 
true true  | 
Boolean variables used to specify whether or not the module should automatically set axis boundaries.  | 
GTopY GBottomY GTopX GBottomX  | 
""  | 
GTopY and GBottomY are string variables that assign top and bottom values to the Y axis; GTopX and GBottomX assign right (top) and left(bottom) values to the X axis. The value of the bottom must be less than that of the top.  |