Generated classes?

I vaguely remember seeing something along the lines of being able to have Glyphs generate classes from a parameter or regex? So not just a dumb list, but one that Glyphs automatically updates.

I can’t – for the life of me – find it anywhere. Probably because I have no clue what you would call such a thing?

Use tokens. There is tutorial and details in the Handbook.

Tokens, yes that is the one. I had forgotten what it was called. Thanks Florian.