Or:
#DEFINE RunIt
...
#IFDEF RunIt
...
#ENDIF

Put a "*" before the #DEFINE to run the lines in the #IF. This way, the code won't even be included in the final EXE.

>You can highlight the block, right mouse and select comment.
>
>Another way for older version of Foxpro;
>
>IF .f.
>***Code in this IF statement won't run.
>
>ENDIF