Hi, Third time's a charm, hopefully. I fixed up all the whitespace issues in 3stack.c and signed off all the patches. The morale of the story is get it right first go :) (I'm not too sure how to combine patch 1 and 2, and being such a git newb my tree is already starting to look like a pair of octopi mating, so I'm just going to leave as is.) Cheers Marc