None.
idle [timeout [cmd args]]
Sets a command that is run after the specified number of seconds of
inactivity is reached. This command will normally be the
blanker command to create a screen blanker, but it can be
any screen command. If no command is specified, only the timeout is
set. A timeout of zero (or the special timeout “off”) disables the timer.
If no arguments are given, the current settings are displayed.
None yet.