PSBBOX - change BoundingBOX of existing PostScript file  

 psbbox < PostScriptfile [optional parameters] > PostScriptfile

 Optional Parameters:                                
 llx=       new llx                                  
 lly=       new lly                                  
 urx=       new urx                                  
 ury=       new ury                                  
 verbose=1  =1 for info printed on stderr (0 for no info)