ftp test with ":q" parameter

I found this in my hosts.cfg and can't figure out what I was trying do:
   0.0.0.0 foo.bar.com # ftp:21:q

I can't find any documentation for the :q parameter.
I'm looking in source, but can't find now where those are parsed.

What does/did this :q do? Anything?
-- 
    Do things because you should, not just because you can.

John Thurston    XXX-XXX-XXXX
user-ce4d79d99bab@xymon.invalid
Department of Administration
State of Alaska