Help with printing
 

I go through short cycles of using Omnigraffle in my wireframing work and always seem to be confounded by the setup for printing. I just don't get the concept behind it and I haven't ever been able to find much helpful instruction in the user manual and other documentation.

For my money, Adobe Illustrator has the best interface for set up and printing I've used so far. I can tweak the size, orientation and tiling with great visual accuracy. With Omnigraffle, it's always a lot of trial and error and I end up having to print many tests before I arrive at decent settings that work for my project which can take quite a bit of time.

I would be immensely grateful if anyone would be able to give me any guidance on understanding how printing is supposed to work in Omnigraffle 5.0.

Many thanks!