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Lady, EVOLVED 
putting licence information in an easily⹀recognizable and ⹀parsable plaintext comment at or near the beginning of a file is sensible and very unixy, but it still irks me a bit when the file in question is x·m·l
that could be structured metadata!
“at least the h·t·m·l parser is standardized”
the way things are going tho we’re more likely to see h·t·m·l adopted as a lingua franca for documents and tools than we are to see an x·m·l parser with wide·spread adoption which is actually good, to say nothing of making reasonable metadata queries of the parsed result