Hacked barebones string support into Palo Alto TinyBasic.
It is now possible to input a string with IN$, then access its characters as $(0), $(1), ...
As in the original language, there is no way to convert a numeric character code back to a character and display it on the screen. (Yet!)
It is nice when a program's author leaves a source comment with well-wishes for future readers, and they are received almost 50 years later.
https://archive.org/details/dr_dobbs_journal_vol_01/page/n143/mode/1up
When hex coding for the Atari XL 6502 processor I did exactly the same. Especially when the program needed to be loaded in segments (paging) to prevent running out of space and do a re-code. However with the Macro Assembler that problem loosely, not entirely, got resolved. It was common to fill it with NOP's but I recall using instructions for other coders too. The beautiful time where the ratio Coder/User was about 10:1...
psf
Marcella Francesca 
michaelborthwick