how to talk to someone while playing a game?

[bambino_91]

my question is
is it possible to talk to someone that is talking to you during a game?

like i am playing during a game a friend of mine messages me but i don't know how to reply back
ofcourse he is not playing with me

 

[Mizoreofsnow]

type /r to replay to a message in game.

 

[bambino_91]

type /r to replay to a message in game.

thnx alot man
u helped me

 

[Growdie]

/w for whispering your friends - /r for replying.