The interlocking system should permit creating shunt routes that can be
set even if the target section is occupied (but not when routes are set
into or over it)
Details on how this could work are yet to be thought of.
Also, apprentice requested a danger-shunt mode a.k.a "Befehl-Taste" to
bypass LZB temporarily. This could use some key combo that otherwise
makes no sense, like Space+W.