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The Jargon File, version 4.4.8 (jargon)

fred: n. 1. The personal name most frequently used as a
metasyntactic variable (see
foo). Allegedly popular because it's easy for a
non-touch-typist to type on a standard QWERTY keyboard. In Great Britain,
‘fred’, ‘jim’ and ‘sheila’ are common
metasyntactic variables because their uppercase versions were
official names given to the 3 memory areas that held
I/O status registers on the lovingly-remembered BBC Microcomputer! (It is
reported that SHEILA was poked the most often.) Unlike
J. Random Hacker or J. Random Loser, the name ‘fred’
has no positive or negative loading (but see Dr. Fred
Mbogo). See also barney.

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单词	字典	翻译
Fred	查看　Fred　在百度字典中的解释	百度英翻中〔查看〕
Fred	查看　Fred　在Google字典中的解释	Google英翻中〔查看〕
Fred	查看　Fred　在Yahoo字典中的解释	Yahoo英翻中〔查看〕