slave healer player targeting

[kraemder]

I'm relearning how to box and hoping to maybe do better than before. I'd like to be able to have my pocket healer help out with healing people around me some. This might not be available in classic but on my main if I focus my healer I can see whom they're targeting. There's a keybind to target nearest player. I'm finding it only targets players in front of the toon though. I did find this macro in Google..

/targetfriendplayer [options] direction

So it seems maybe I specify the direction? Anyone know how this works?

or maybe direction is there way of succinctly saying line of sight.