For those people who have rewound their film too far, or whose camera did it for them, and who don't want to tear the factory canister open for whatever reason:
I was actually looking for "pulling film" as in "pull-processing", but this turned up - and as it's a thing I've done more than once myself, I found it quite nifty! Among other things, it means I can cut the leaders off my films and bevel them in daylight before I shove 'em in the darkbag. Must give it a try next time I send a colour film for processing. Until now I've been practising leaving the leader out even with my send-away C41 stuff, but I see no reason not to wind the next one back all the way and try this trick for myself.