Perhaps I am using the wrong word, but I assumed "merge" was it.
What I mean is to be able to take a large picture and using a scanner to scan the entire work, but having to make two passes. Then take the two scanned parts, lining them up and using the program to make one nice picture, just like the origional.
Maybe I have the word wrong. Perhaps it is called "Snapping"? Anyway, I have quite a few large excellent pictures and photos that I would like to archive, but can't scan them in to the computer with one pass.