A lot of it reminds me of the olden days of Sinclair ZX81s with 1kB of memory, of which roughly half was free once you drew on the screen and defined a few variables.

We used to write things like "LET A=COS PI" instead of "LET A=1", or "SIN PI" instead of 0, because keywords were represented as a single byte and numeric constants as five bytes so two keywords represented a useful saving of three bytes.

Back then it made a huge difference but now that modern computers have hundreds or even thousands of kilobytes of RAM free it's a bit pointless.