999 pages, exactly
I notice in Mathcad questtions that you can go to page 999, which is exactly filled to the bottom of the page. That's either an astonishing coincidence, or everything beyond page 999 has just been deleted (because whoever wrote the software for the forums can't handle numbers as large as 1000), and presumably every time someone adds a new thread, one more thread will be deleted from the current content. Please tell me I'm wrong.

