Section - Auto Get Off
Check going somewhere (this is the auto get off rule):
if player is in something (called the encloser) and the encloser is not a room:
auto get off encloser;
else if player is on something (called the encloser) and the encloser is not a room:
auto get off encloser.
To auto get off (encloser - a thing):
say "(first leaving [the encloser])[line break]";
silently try exiting.
Does the player mean getting off something not onable: it is very unlikely.
Definition: a thing is onable:
if it is a room, no;
if it supports the player or it contains the player, yes;
no.