Basic VisualMode.lua question

[phoebegraubard]

I am trying to fix up some of my old (lame) maps and trying to get used to Weland and VisualMode.lua. Weland is a snap but I'm having all kind of problems with VisualMode. The keys don't do what they're supposed to. My main problem is that I can't switch textures. The readme says hold down the mic key and press prev or next weapon. That doesn't work for me, either using keys or the scroll wheel on the mouse (which switches weapons in AlephOne.) I don't know how to select the items on the menu at the top of the screen either in move mode or texture mode. Pardon my newbieness, I'm just getting started with those editors.