-- ViewerAdjust.tip; Last Edited by McGregor, September 14, 1982 9:05 am

SELECT TRIGGER FROM

  Mouse => Coords, Move;

  Red Up => Coords, End;
  Red Down => SELECT ENABLE FROM
  	Blue Down => Abort;
  	Yellow Down => Abort;
  	ENDCASE;

  Yellow Up => Coords, End;
  Yellow Down => SELECT ENABLE FROM
  	Blue Down => Abort;
  	Red Down => Abort;
  	ENDCASE;

  Blue Up => Coords, End;
  Blue Up => SELECT ENABLE FROM
  	Red Down => Abort;
  	Yellow Down => Abort;
  	ENDCASE;
  
  ENDCASE.