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by 4cao 2228 days ago
Markdown itself is from 2004 but the .md extension/suffix wasn't used for it until sometime later (not really sure where it appeared first).
1 comments
tjalfi 2228 days ago
MDCD[0], an open source DOS archiver, used the .MD extension in 1988.

[0] https://www.sac.sk/download/pack/mdcd10.zip

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