Target calling?

I read this term a lot but I didn't see anyone explain how to do it - I'm still rather new and I've only seen someone call targts once in the arena...also once while walking with a PUG there was a message stating that my character is casting flare on a monster, but I don't know how I did that.

So what do you have to do to get those messages? I've read a lot of pages and the manual and I haven't found it anywhere

Hold control and either click the monster, or once youve clicked it, hold control and tap space..When u cast a spell holding control it will say it.

All you have to do is mark an enemy by clicking on it. Then press CTRL and SPACE at the same time, now the enemy is marked and your mates only have to press 't' to attack this enemy with you.

That's all.

Thank you, I guessed it required pressing some buttons at the same time but couldn't guess the right ones Thanks again.