'TRACE ON' TRACES EACH LINE                                                     
Trace is ON                                                                     
[ 40 GOTO 90 ][ 90 PRINT "THAT FOLLOWS THE 'TRACE ON' STATEMENT" ]THAT FOLLOWS T
[ 100 GOTO 50 ][ 50 PRINT "UNTIL TURNED OFF BY" ]UNTIL TURNED OFF BY            
[ 60 TRACE OFF ]Trace is OFF                                                    
THE 'TRACE OFF' STATEMENT                                                       
AS ILLUSTRATED BY THIS LINE                                                     
