Hi...
Here's a simple but useful patch i made for live performance... as an instrumentalist I've sometimes needed a large clock for synchronisation between myself/an ensemble and a pre-recorded electronics part... (mainly for time-space notated scored music... so not necessarily rhythmic). A short while back godinpants proposed a great solution.. and here's another by triggering changes in the labeling of invisible canvases..
I hope this can be useful to somebody!
emeidos