If a player can hide behind YOUR HUD bar, then they can outmaneuver you anyway and you've pretty much lost the fight.
That's not a macro.
A macro allows a player to do an action quickly, usually faster than physically possible.
For example, a player wishing to pirate could have a macro that has them hit the tractor key, say, 35 times a second (while the chat window is not open) for if when a lolwut trader tries to jettison and subsequently shjote their cargo. To the naked eye, it's functionally identical to seeing the treasure chest icon flash and mashing B, but it allows the player to keep up whatever they've been doing beforehand without having to stretch their hand too much.
