Comment by Someone

And of course, you can always add support for local variables yourself. For an example, see http://turboforth.net/resources/locals.html, which takes 808 bytes to implement. That’s hefty, for some systems where one would use Forth, but, FTA, “Placing key values in locals will actually both increase peformance, and make your code smaller”, so you can earn that back if you use the facility enough)