This is beautiful. Schematic capture, PCB layout, broadcast facilities - and 3D cable routing with auto-generated cut lists and labels. That's the workflow taken to its full potential. 64K RAM, 8086 with math coprocessor, ACAD 1.0. Memory was such a pain back then. I eventually got a Quadra 700 (68MB) with A/UX - Unix on a Mac felt like the future. Fun fact: we got Betz's original XLISP (C) running in WASM for a benchmark. It destroys my Rust version. But speed was never the point - the CAD workflow was. And yours proves the pattern scaled far beyond what I did with electrical schematics.

This is what the facility design wiring diagrams looked like:

https://imgur.com/a/niXkSt7

It shows that per-connector metadata that was added to each equipment symbol. The metadata allowed AutoLISP to do some really cool and intelligent things.

The PCB layout tool had interesting constraints. One of the issues was that pad graphics took up way too much memory. So, what I had to do, was to layout PCB's using a symbol that consisted of two lines forming an X instead of real pads. The symbol name encoded the diameter, hole size, etc.

When the layout was done, I had to unload a bunch of modules and then run an AutoLISP routine that would find and replace all "PAD_NNNN_X" symbols with real "PAD_NNNN" symbols before plotting.

Once ACAD migrated to Windows this was no longer an issue. Of course, by that time, accessible ECAD tools were around. I think my last ACAD schematic and layout was somewhere around 1993. I just didn't have the money to invest in ECAD tools of the era, so my ACAD tool served a purpose.