[kamocat]

Thanks!
I found that 3/4 * "divisions" should be added to the angle returned (instead of 1/2 * "divisions"), assuming you want zero to be up.
I'm certainly glad using the ATAN function is faster than using an array, however, I'm curios as to why that might be. Is the time-consuming part in the opening of the file, or the recalling of it?

Anyways, thank you! It works now, and I can get on to implementing it. Where would I look to find that mouse pointer control?