ARPA
Click on the red underlined text to get to the source
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For many years, the ARPA-Internet community has supported the
distribution of bulletins, information, and data in a timely fashion
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... C: STAT 10110
S: 223 10110 <23445@sdcsvax.ARPA> article retrieved - statistics
only (article 10110 selected, its message-id is
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... header)
C: HEAD
S: 221 10110 <23445@sdcsvax.ARPA> article retrieved - head
follows (text of the header appears here)
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... client wants to see the text body of the article)
C: BODY
S: 222 10110 <23445@sdcsvax.ARPA> article retrieved - body
follows (body text here)
S: .
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...
C: ARTICLE 402
S: 220 402 <4105@ucbvax.ARPA> Article retrieved, text follows
S: (article header and body follow)
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... (client offers an article it has received recently)
C: IHAVE <4105@ucbvax.ARPA>
S: 435 Already seen that one, where you been?
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... Crocker, D., "Standard for the Format of ARPA Internet Text Messages", RFC 822std11(-> 2822prop) ...