There's been some debate here on that subject. Was able to find this link:
http://www.waf80.de/virus/viruwaves/
it has the graphic representation of the waves. I think they're great for adding a different twist to typical lfo modulation of parameters, giving it some edge - since most synthesizers only have the regular old school analogue waves to choose from. I like to use them for FM sounds as well, with FM mode "wave", some very interesting timbres can be achieved like that.
For example: try using "random" as a source for "waveselect" on a fm patch. make sure the "shape" knob on the selected oscillator is turned all the way left, of course. when you trigger a key, it randomly selects one of those waves to modulate the second oscillator with. or use sample and hold LFO for same destination, for some glitchy madness along with pitch modulation on the second... great fun exploring with that
EDIT
I got that link from this post here:
http://www.infekted.org/virus/showthread.php?t=25580
There was ongoing debate about finding names or uses best suited to each of them. My opinion is that they appear to be somewhat random. But there's plenty of them (look in the chart) that share big similarities with more standard waves, like sine. So they could be described like "sine wave drawn by parkinson's hands" or something like that. Thinking like that helps here, I think. You can go for a more unstable sine like vibrato, for example.