Originally Posted by
Hood
It doesn't.
Scripts work by not using exact co-ordinates. They may instead use the ButtonClick command and use the name of the control. That's not possible here because these buttons arent windows controls (you'll notice where possible, the other replayer hotkeys use this method).
Other scripts do clever stuff like working out the relative positions of the contorls by looking at the windows size and working out button location as a fraction of that. That is entirely possible here, but beyond the goal of the script (it's my own personal script i did to just get working, and others were interested so i released it. this was before HEM had resizeable windows)