YKYBHTLW // abbrev.
Abbreviation of `You know you've been hacking too long
when...', which became established on the Usenet group
_alt.folklore.computers_ during extended discussion of the
indicated entry in the Jargon File.
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YMMV // cav.
Abbreviation for Your mileage may vary
common on Usenet.
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You are not expected to understand this [Unix] cav.
The canonical comment describing something magic or too complicated to bother explaining
properly. From an infamous comment in the context-switching code
of the V6 Unix kernel. Dennis Ritchie has explained this
in detail.
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