Hi and welcome to the forums.
I's Cheza the silly woof-creature =^-^=
Hopefully you'll have fun here and enjoy your stay :3
The "insert quote"-function might be what you're looking for, if I understood what you meant correctly..
Oherwise I guess just writing something like "@randomfur123:*text here*" could also work to let people know you mean them.
Or then, if you just want to talk in private with a single person, you just follow grey's instructions.
As for what I'm doing here... I mostly live in the forum games-section, but sometimes I wander lost and end up on other parts of the place...
(PS. Nice dA-gallery)