A use case for unicode bidirectional algorithm[1] at language implimentation level.

(vs. more traditioinal abstraction/logic level planes & normal to plane concepts: apl - hide it all in the language; spreadsheet - hide nothing/any information at any abstraction level is displayable[2][3][4][5]6])

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[1] Unicode bidirectinal algorithm : https://www.unicode.org/reports/tr9/

[2] spreadsheet : http://en.wikipedia.org/wiki/Spreadsheet

[3] sc-im - an ncuses spreadsheet program for the terminal: https://news.ycombinator.com/item?id=24318367

[4] Excel as a Turing-complete functional programming environment : https://eusprig.org/wp-content/uploads/2309.00115.pdf

[5] lambda the ultimate excell worksheet function : https://www.microsoft.com/en-us/research/blog/lambda-the-ult...

[6] escher circuits : https://esoteric.codes/blog/escher-circuits-using-vision-to-...