======Synopsis:======
[[set]] display [on|off|toggle]

======Description:======
When turned off, this setting will cause the client to suppress all
messages from being displayed (though it can still act on them internally.
However, [[ECHO]] can still be used to explicitly print messages to the
display.

======Other Notes:======
This setting is automatically turned off while a script file is being
loaded, including the .ircrc file.  It is turned on again when the
file finishes loading.  This can be overridden by explicitly setting
[[set display|DISPLAY]] on inside the loaded scripts.