Syntax: /setlayer N [window]
N must be a number from 0 to 255. 0 is full trasparency, 255 is full opacity
The [window] parameter is optional; if not specified, /setlayer affects the main mirc window. Of course, the target window (if any) must be a desktop one.
Another useful (at least for me) undocumented identifier is $nickmode , which works exactly like $prefix, but returns the letters instead of the symbols. $evalnext(stuff,N) also works like $eval(stuff,N+1). I remember a post in the old boards talking about $eval() being buggy. Oddly enough, $evalnext() didn't have that bug (I don't remember anything about the bug anymore and maybe it's fixed by now).
