Sure,
I had an idea, for sheet setup. Typically when we setup sheets we xref a base file into a sheet file. Then go through paperspace and pick a scale, However based up on the shape of the base it can sometimes be hard to center up. (Again, this is just an idea). So the idea is to go into the base, Draw a rectangle that is the size of your viewport. Center it up on the piece you want to see.(this is where the masking comes into play). Save a file, attach the base to the sheet file, then adjust the viewport scale to (what your rectangle shape is), and then the viewport will auto center to a scale.
So if you doing ALOT Of sheets with the same viewport, this helps out.
I know there a million ways to do things, but I was curious about this way.
Thanks