You have a variable called the "busy" variable, that you can set
to 0, 1 or 2. It is used when you are busy doing something on ICC,
and do not want to respond to "tells".
If you type "set busy 1", then anyone who sends you a tell will receive
the information that you are "busy". If you "set busy 2", they will
receive that information, and you will not get their tell. (You will
still get tells from admins and people on your notify list).
When you are no longer busy, type "set busy 0".
If you have busy=1 or busy=2 and you use the "away" command, your "away"
message will not be cleared when you issue an ICC command. Your "away"
message gets cleared automatically when you issue any ICC command if
you have busy=0.