Used in initiating chat sessions.
Taking action
Type messages into the open field at the bottom of the dialog, then 
 click  . 
 To review earlier messages in a lengthy interchange, click
. 
 To review earlier messages in a lengthy interchange, click  . That returns you to the top of the current session 
 log in the upper part of this dialog.
. That returns you to the top of the current session 
 log in the upper part of this dialog.