1. Press A see what it does, press B see what it does, then repeat wilst holding Down...

or do the easy way and

2. Find the .cmd file/Windows NT Command Script, Right click it, and chose EDIT, it will say at the top:

; The CMD File
;
; Two Parts...

And all this other stuff, there it will say the combo's, such as ~D, F, x or different things for different combo's just read that and your good.

But, if there's a movelist inside the rar/zip/7z read that first.

Hope I helped ^.^