Vecter

[Sam DeathWalker]

Well I never heard of its use to cast spells not on cooldown with a single key press prior to this:

Method 1: Make keys send multiple keystrokes per press.
What I mean by this is that when I press “1″, it sends 123 at the exact same time to every window of WoW. Consequently, when the WoW client receives 123 at the same time, it will only let me do one thing at a time – so, it will try to execute whatever is on my 1 key. If the spell on the 1 key is on cooldown, it will try to execute the 2 key. If the 1 and 2 key spells are on cooldown it will try to cast whatever is on 3, and if all of them are on cooldown it won’t do anything but tell me those spells aren’t ready yet.

And it could not have been that well known as then Merc would not have needed his two step macro ....

You are probably right though I guess those who knew about it probably didnt post about it.

[MiRai]

What I mean by this is...

I know exactly what you mean by it. It's called the "popsicle stick" method. Just tape a popsicle stick (or any object) across, for example, your 1 - 5 keys on your keyboard -- Just like this.