This is used to control error output during simulation, and especially optimization. All error output is sent to a window of the specified size, at the specified location. The ERROR class must be followed by a > and an arbitrary command name. The ERROR command can only be used as part of a TOOL control.
:SCREEN OPTIMIZING
TEXTONLY,"Optimization in progress",0,25,100,0,C||18|B|
COMMAND,"",0,0,0,0,,,SIMULATE>OPTIMIZE|1
TOOL,"SP1",0,50,100,50,,,ERROR>COMM7
COMMAND,"",0,0,0,0,,,MENU>RUN|O,
COMMAND,"",0,0,0,0,,,SIMULATE>OPTIMIZE|0
TEXTONLY,"Press any key to return to main menu",0,30,100,0,C
ANYKEY,"",0,0,0,0,0,,,MAIN