So you don't need to distinguish keywords from variables by case when you have syntax highlighting, and lowercase has been shown to be faster to comprehend than

So you don't need to distinguish keywords from variables by case when you have syntax highlighting, and lowercase has been shown to be faster to comprehend than uppercase while driving[0], so switching that metadata signal to a secondary channel (color of the text) seems natural. colorForth[1] was made on a similar premise to exploit that channel, but as a read-write rather than just read channel. [0]: https://trid.trb.org/view.aspx?id=475144 https://trid.trb.org/view.aspx?id=475144 [1]: https://en.wikipedia.org/wiki/ColorForth https://en.wikipedia.org/wiki/ColorForth