Recap's GroovyMAME guide already contains all the information big10p is requesting, however I want to hear his opinion about adding it to the wiki:
(this guide will need to be updated for CRT Emudriver 2.0, so maybe it's better to wait)
Well, I've mentioned that before but I've struggled reading that guide, it didn't even mention you could just set 'd3d9ex' in the ini with a simple editing, writing just the term.
Another example; personally I've also struggled with producing a single log because I am far from familiar with command line and you had to show me the whole procedure yourself Calamity (one essential step was necessary and there was no way I would have guessed it).
One more; I've set the monitor type to 'lcd' since it's what I'm using at the moment and because I've read it in some older thread where that term was listed, I still don't know though if it's a valid option or not but there's no mention in that guide again.
Most advice in the threads and the geedorah guide largely assume people are at ease with command line and can somwhat 'guess' things, when it's a hundred times easier for noobs to edit the ini and, it would be even easier and clear if we had the full list of available terms.
I would also suggest a troubleshooting section in the wiki for the most direct issues you're often asked about, even if it seems redundant it's about catching the lost noob's eye and direct him straight into solutions.
Another suggestion: when it's live please sticky it at the top of the GM forum. ^^