Looks like the sheet currently has 578 entries... and that's not the only sheet o_0
One hint, not that it matters: blk = block
We have some crazy #*$@& coming up for you all in the next few months. Hopefully it'll make the big delays worth it once we start pumping out new rooms/levels.
Btw, here's a fun little thing I drew today - a sarcophagus.