I'm new with a Taig CNC, Mach 3 and BobCadCm to learn. I notice that the last line of any code does not show in the Mach 3 Program Run window. In fact, when I write a subroutine starting with M98 and ending with M99, the subroutine runs, but the program stops at the last line in the subroutine - and doesn't return to the program. I found that if I added another M99 (one after the other), the code now shows in the window and the program runs correctly. Any help would be appreciated.