[ColeMiner]

Those "Ab:Ac:" macros only work with variable declarations, when you have more information about the variables in the text (such as their tag and size). However, they are well documented in the pre-processor tutorial. Your problem is that you are thinking of "%0" and "%1" as parameters, as indicated by your topic title - forget that now. They are completely different things and you need to not try and apply anything you know about function parameters to them. They are JUST placeholders. They say "I'm here now, but something else will be shortly".