reset <qualifiers>
This command returns GrADS to its initial state with the following exceptions:
set display settings
are not modified
If files are open, the default file is set to 1, and the dimension environment is set to X,Y varying and Z and T set to 1 (as though file 1 were just opened).
The reset command may be qualified so that only certain
aspects of GrADS are returned to their initial state.
The optional qualifiers are as follows:
reset events    
resets the events buffer (e.g., mouse clicks) reset graphics  
resets the graphics, but not the widgets reset hbuff     
resets the display buffer when in double buffer mode reset norset    
resets the X events only
See the section of the User's Guide on reinitialization of GrADS.