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Computing (FOLDOC) dictionary (also found in English - Vietnamese, English - English (Wordnet), )
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1. jargon (From Citizen's Band amateur radio slang) An
electronic pseudonym or "nom de guerre" intended to conceal
the user's true identity. Network and BBS handles function as
the same sort of simultaneous concealment and display one
finds on CB.
Use of grandiose handles is characteristic of crackers,
weenies, spods, and other lower forms of network life;
true hackers travel on their own reputations rather than
invented legendry.
Compare nick.
2. programming (Macintosh) A pointer to a pointer to
dynamically-allocated memory. The extra level of indirection
allows on-the-fly memory compaction (to cut down on
fragmentation) or garbage collection of unused resources,
with minimal impact on the (possibly multiple) parts of the
larger program containing references to the allocated memory.