I have been using madtracker for about 7 years now, and only just now have I found the shortcut for playing a track from where I stopped, ie: not from the beginning of the pattern. I got this useful infomation from the old wiki section. Very useful.
I was thinking that maybe people should post here their most used and useful shortcuts.
The shortcut I found was: hold down left shift and hit either the right ctrl or alt button - to play a pattern from where you last stopped.