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rbonvall
on July 29, 2020
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Schemastore.org – schemas for all commonly known J...
As far as I know, they were originally introduced by Niklaus Wirth to describe Pascal's syntax. See the last pages in this manual from 1973:
https://www.research-collection.ethz.ch/bitstream/handle/20....
jhrwalter
on July 30, 2020
[–]
They even go back to Algol 68:
http://www.softwarepreservation.org/projects/ALGOL/book/Lind...
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