screen: Colon

 
 4.3 Colon
 =========
 
 Customization can also be done online, with this command:
 
  -- Command: colon
      ('C-a :')
      Allows you to enter '.screenrc' command lines.  Useful for
      on-the-fly modification of key bindings, specific window creation
      and changing settings.  Note that the 'set' keyword no longer
      exists, as of version 3.3.  Change default settings with commands
      starting with 'def'.  You might think of this as the 'ex' command
      mode of 'screen', with 'copy' as its 'vi' command mode (SeeCopy
      and Paste).