MacroQuestion

I've been loking (this forum and google) and trying for hours... This is a macro for a game, doing left click while holding down Shift saves a of time. How can It be done? Also, in a more general way, how do you hold down a key while doing some instructions that has nothing to do with keyboard? Thanks! -Im using Macto Express Pro 4.2.1 EDIT: I did this trick... <TEXT TYPE Action="0" Text="<SHIFTD>" _COMMENT="1"/> <MOUSE LEFT BUTTON DOWN/> <WAIT FOR TIME TO ELAPSE Hours="0" Minutes="0" Seconds="1"/> <MOUSE LEFT BUTTON UP/> It works but it takes too much time, I would like to do a "Wait for time" that waits 10ms or something. How could I do that? Thanks. Also, is there other way achive this?