Slightly disappointing: he had to put 264 lines of code across 5 files.

I, right now in 2026 and at least one decade later, get at most 59 lines of code at once in my primary editor (Panic's Nova) on a 27" monitor.

That is almost the same ratio.

I don't know if you know the reference, but his screenful of code looked like this: https://www.jsoftware.com/ioj/iojATW.htm

It's stylistically denser than a typical 59 lines of code, then macro-densified and 'golfed' further.