The "source available" part kind of reminds me of MarkDeep (though in markdeep, the source is the document itself): https://casual-effects.com/markdeep/ https:

The "source available" part kind of reminds me of MarkDeep (though in markdeep, the source is the document itself): https://casual-effects.com/markdeep/ https://casual-effects.com/markdeep/