Reminds me of ZX81's BASIC: you didn't type keywords. There was a key for each one on the specialized keyboard. The editor was context-sensitive - in other word

Reminds me of ZX81's BASIC: you didn't type keywords. There was a key for each one on the specialized keyboard. The editor was context-sensitive - in other words, a parser-driven lexical analyzer was you. At the time, it seemed a little magical to me that it knew whether you wanted to type a word/number versus a keyword, and what kind of keyword (but really, the pedagogically relevant aspect was that I knew). BTW Significant to the ZX81 was the memory saved by storing tokens instead of their text representation. Yes. It had 1k RAM kids - including display memory (no separate GPU). This parsing when entered would also make runtime faster.