Added in 1.9.4

/showmirc -mnrstxoplf

Manipulates the display of the main AdiIRC window.

Switches
-n - Minimize.
-r - Restore (Restores to previous window state, normal or maximized).
-s - Show.
-t - Tray.
-x - Maximize.
-o - On Top.
-p - Not On Top.
-m - Minimize according to tray setting.
-f - Fullscreen. (see also /fullscreen)
-l - Lock screen, can be used wit the -ntm switches to lock the screen. (see also /lock)