(brief, rough, overview of Ohm, PEG, pattern matching, SCLs)
Use the Ohm Editor (good for any PEG grammar) https://ohmlang.github.io/editor/
https://guitarvydas.github.io/2020/12/27/PEG.html
https://guitarvydas.github.io/2021/03/17/PEG-vs.-Other-Pattern-Matchers.html
https://guitarvydas.github.io/2021/03/19/Racket-PEG.html
https://guitarvydas.github.io/2020/12/09/OhmInSmallSteps.html
https://guitarvydas.github.io/2021/03/19/Racket-PEG.html
https://guitarvydas.github.io/2021/03/01/Scheme-to-Javascript.html
https://guitarvydas.github.io/2021/03/15/SVG-grammar.html
https://guitarvydas.github.io/2021/03/24/Glue-Manual.html
https://guitarvydas.github.io/2021/03/24/REGEX-vs-PEG.html
https://guitarvydas.github.io/2021/03/24/SVG-to-Code-(1).html