Synopsis:
   l [<channel>]

Description:
   L makes you leave a channel.  That's it.  If you happen to be on
   multiple channels, you may leave more than one at the same time. 
   
Examples:
   To leave channel foobar:
      /l foobar 

   To leave your current channel:
      /l

See Also:
   join(1); leave; set(4)