Thats not all it can do, no, but its probably the most useful. I cant remember off the top of my head how many it supports, but I did post it up so it seems like you found them. Remember the more things you have it reading, the slower each will be to respond. The car can only update at quite a slow refresh, so each time you add a new measure for it to poll, they all get slower. I found 6 measures to be an ok trade off between amount of info and speed of refresh - and that was with setting some of them to slow refresh too (like coolant temp).
Hope that makes sense, it was just a brain dump