OUTPUT value
OP value

Ends the running of the procedure in which it appears. That procedure outputs value to the context in which it was invoked. Don't be confused: OUTPUT itself is a command, but the procedure that invokes OUTPUT is an operation.

The value input may be any Logo thing (word, list, array, etc.).

TO MYPROGRAM
  OUTPUT [This is the output]
END

SHOW MYPROGRAM
[This is the output]