Looks useful.

Btw, $MAIN-CLASS is a terrible name to be used in the examples, its idea was to resemble shell variables I guess, but they can't have minus sign inside.

Few paragraphs below there is another example of multi-word token and this time done properly with underscores.

This is bad, because readers might get the wrong impression that such syntax can be used for real variables. Also there's a chance for this article to be an input for various llms, thus increasing the confusion in the future.