Sin dorei

I was not quite sure where to put this but it someting i was vaguely aware of when it came out but it has a lot more meaning now. Here is aexerpt from the article.

One new largely unknown feature that came with the expansion is the ability to set a certain unit, whether friendly or hostile, as your "focus" with the "/focus" command (and to clear the focus with the "/clearfocus" command). This helps in a lot of situations where you might otherwise lose track of a certain player or monster and find things getting out of control. A mage, for instance, can set a certain target as the focus at the beginning of a battle, and use a "/polymorph focus" macro to keep it out of the fight at all times without having to switch targets. Unfortunately, however, the standard blizzard interface provides no new unit frame or other visual means for you to see the current status of your focus or even to know what your focus is.