How to comment out?

This is driving me bonkers. How do you comment out a line in a DOpus command? I've tried ; and * and , and rem and ' and /* */ and everything else I can think of from all the languages I've ever used, but I can't seem to stumble upon whatever it is DOpus uses as a comment indicator. And a search of the manual turns up nothing, either (well, of course at least nothing I can find). Anyone help?

-- Steve

It's //

(Same as single-line comments in C++, C#, Java, Javascript and newer versions of C.)