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Convincing enough?
https://codeberg.org/Ironclad/Gloire
First time I saw it was during undergraduate days.... 2006 or 2007?
https://gist.github.com/anta40/60f62c803a091ad0415d60f8cac55...
Disclaimer: I work on RN nowadays.
But most likely lots of those Forth coders implement their own which don't necessarily conform to the standard.
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