It's getting close to being ready to share for testing. Still some things to do when I get some time...and I've been sick so haven't had much of that. I've got a nice little slide-up menu in there and you can now load new subsectors. Also got bordering subsector names in...though they're white on black instead of white on transparent.
Still have the flicker problem I mentioned, with close transparent surfaces fighting to be rendered on top. I'm told by some Blitz3D/DX7 experts that not much can be done about it. I may re-engineer this in another programming language at some point. The flicker is quite distracting.
M