Using Server Commands Live

I've had control over bani and shrub servers in the past.  In either case I could change maps, gravity, g_speed and etc. by typing commands in the console.  The syntax is a little different, for banimod you use / key prior to a command and in shrub you use the exclamation point !.  Some commands in the Coop console seem to work with a /, for example /g_speed 400 changes player movement speed.  However /nextmap, !nextmap or ?nextmap doesn't do anything except return BROADCAST: PRINT "SERVER: ?NEXTMAP\N" or whatever text I enter after the /,! or ? symbol.

So, if I start an internet server successfully from within RTCWCoop.x86.exe, where would I find the server config?  I could just edit that.  Is it the file that exists in the RTCWCoop folder in My Documents folder? 

Is there a current list of Coop server variables & their commands and functions?