YAML (Yet Another Markup Language) https://yaml.org/has idea as xml, json ot python but more user readable and less tag bloated https://learnxinyminutes.com/docs/yaml/
Don't use Tab characters
# is the comment character
It uses:
key: value
For the values it is not necessary to use " characters for strings, hex values can be insterted as 0x
It can be nested
nested_keys: key1: value key2: value
Keys can have multiple values
key: - Item 1 - Item 2
https://www.yamllint.com/ to check the syntax
https://www.bairesdev.com/tools/json2yaml/ to convert json in yaml