While it's been a long long time since I've used it, I think that was not the case for TRS-80 Level I BASIC -- it didn't tokenize, so shorthand saved actual mem

While it's been a long long time since I've used it, I think that was not the case for TRS-80 Level I BASIC -- it didn't tokenize, so shorthand saved actual memory. And not using spaces saved bytes. Apropos of the conversation on variables, Level I BASIC only allowed one-character variable names: you had 26 integer variables named A-Z, two (yes, two) string variables, A$ and B$, and only one array variable, A(). It also had only three error messages: "WHAT?" (any syntax-related problem), "HOW?" (any execution error that wasn't syntax-related, like division by zero), and "SORRY" (out of memory).