Just reading your comment brought back muscle memories - between '72 and '79 I used the first CRT-based text editor I ever saw, and I swear I could sit down at

Just reading your comment brought back muscle memories - between '72 and '79 I used the first CRT-based text editor I ever saw, and I swear I could sit down at a KSR-33 Teletype attached to one of those old 1 Mhz machines and be almost as productive as with any Mac editor - golly - even the opcodes are coming back - and I can hear the TTY in my mind's ear. Scary.