cforth

Well it started out as a joke, but then I'm afraid it's starting to making sense. The blink attribute could be a control structure! Blinking text would only execute when you could see it, so you could write a blinking word "BEEP," and you'd hear it beeping on and off as it blinked! Or you could change a "DO" loop into a "DON'T" loop by making it transparent. And you could extend IF ELSE THEN to support a partially transparent MAYBE clause, whose probability of executing was proportional to its alpha channel. When looking at the FORTH code in Github that Mitch linked to, I realized that Github supports colored syntax highlighting for FORTH! (Or at least it tries.) https://github.com/MitchBradley/cforth/blob/master/src/cfort... But it colored the "Primitive control flow words" like if/do/while/etc red by mistake, because it didn't realize t

I got a quick reply from Mitch Bradley! Yes I wrote a paper but I probably can't find it. The easiest place to look would be in the Open Firmware source. https://github.com/MitchBradley/openfirmware/blob/master/for... The magic is all in +level and -level. Search for those in kernel.fth to see other places they are used to achieve a similar effect, e.g. in abort" For an alternative but effectively equivalent formulation, see: https://github.com/MitchBradley/cforth/blob/master/src/cfort... and https://github.com/MitchBradley/cforth/blob/master/src/cfort...