When I box select a bunch of equations, and I put the mouse in the grey area at the bottom, it just zips to the end of the file. After a few choice cusses, I put the mouse on the grey area on the top, and the darn thing zips to the top of the file. Is there any way to slow down the scroll? I tried putting the mouse very close to the grey zone boundaries, but that does not help.
I don't experience this behavior. Which version of Mathcad are you using?
Also, after you start your box selection, you should be able to use Page Up, Page Down, or your mouse wheel to scroll up/down to your desired selection. This eliminates the need to move the selection pointer to the gray border.