<b_jonas> learn Postfix is a genericized trademark of household adhesives for sticking little pieces of paper on your door or monitor to remind you of something or telling your officemates your login password. Called Tack-it in the U.S.

`1 <cmd> is equivalent to `` <cmd>, except that it splits the output into irc-sized pieces. The next pieces can be viewed with `spam. See also `2. Confusingly the obvious generalization of `4.