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Very easy. You could do it yourself after 5 min of reading ;-)

That time would only be enough to read the overview, go through the examples, click on the "uniquely customizable" link hoping to see the answer and then be flooded with the garbage digital tokens of the scientific world - 100+ references...

True. If you are new to Lisps it will require substantially more than 5 minutes to learn about the different types of macros. For Racket in general you might start here.[0][1] For Rhombus probably here.[2][3]

I'm not clear what your asking about regarding the ellipses though.

[0] https://docs.racket-lang.org/guide/macros.html

[1] https://docs.racket-lang.org/reference/Reader_Extension.html

[2] https://docs.racket-lang.org/rhombus-meta/index.html

[3] https://docs.racket-lang.org/rhombus/Syntax_Objects_and_Macr...

The ellipses was about replacing 3 ascii symbols 1. 2. 3. with 1 unicode symbol 1… and have it serve the exact language function (repetitions)

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