Apple MacBook Air (11-inch, Early 2014) - Manual (Page 14)

Just log in with your Apple ID,
and you can send and receive
both iMessage and SMS messages,
including text, photos, videos, and
more, to your friends on a Mac,
iPad, iPhone, or iPod touch. With
iMessage, you can even start a
conversation on one device and
pick it up on another. You can
easily start and manage group
conversations, including adding
a title and new participants. And
if you want to talk to someone
face to face, you can start a
FaceTime video call* right from
a conversation in Messages.
Replies in progress
Three dots mean your
friend is typing a reply. Delivery receipts
See when your
message has arrived. Manage conversations
Click Details to start a FaceTime
call or see the attachments from
your conversation.
*Requires FaceTime-enabled device for both caller and recipient. Not available in all areas.
Messages