I like to do a lot of mouse over healing when doing random stuff and fates. As of right now the only way to do this effectively is to have nothing targeted. I'd like to be able to have a boss mob targeted and not heal myself when I cast a heal without a mouse over target. Healing myself when I should have healed the person I was trying to mouse over, but missed, is not a good thing. When i remove the /ac "" <t> line it doesn't heal anything but mouse over targets. If i just remove the <t> it still heals me, which is what I would expect. The macro shouldn't be healing me without the <me> tag or a plain /ac "".

/ac "" <t> means heal target, not heal me. If there is no target or an invalid target it shouldn't do anything.