Would it be possible to add some command that would tell you how many
unexplored rooms you have in your current area? That is, it'd output something
like:
You have explored 10 out of 18 rooms in this area.

This should ideally count all the rooms, including those that are
player-accessible, but nobody has found them yet.

The motivation is that many people like exploring, but wasting time on
non-existant secrets sucks - this won't reveal any, but it'll narrow down the
areas that are worth investigating further. Even if the output is not perfect
(often rooms seem to be misassigned, areas are split weirdly, etc), it'd still
be a huge help.

Likely a long shot, but figured I'd ask!