Keyword "null" Question

[Michael Bustillo <Michael_B_Bustillo@noSpam.raytheon.com>]

While reviewing the Ada LRM, it makes note that the Ada keyword "null"
does nothing except pass to the next statement.  This seems intuitive
enough, however...

I'm currently attempting to reverse engineer some code so that it can be
converted to another language, and I've run across the following:

    if SOME_EVENT_TOOK_PLACE then
        null;
    end if;

This statement is simply standing alone by itself, not part of any
"case-like" structure or anything sneaky.  I guess my question is when
it says "...it does nothing..." does it actually mean that it is putting
a NO OP there?  Because then this would actually be doing something,
most likely a timing issue, and that's what I need to know.

I appreciate your time, and thanks.