Expect all those when and if I push it to know that this sort of metasyntactic abstraction is trivial in a Lisp.— Just A Summary :
Approximately 212 RFCs so far, starting with RFC 269, contain the terms ` foo ', ` bar', or ` foobar 'as metasyntactic variables without any proper explanation or definition.— LXer Linux News
Approximately 212 RFCs, or about 7\% of RFCs issued so far, starting with [RFC269], contain the terms ` foo ', ` bar', or ` foobar 'used as a metasyntactic variable without any proper explanation or definition.— LXer Linux News
As an Appendix, we include a table of RFC occurrences of these words as metasyntactic variables.— LXer Linux News
The second metasyntactic variable, after foo and before baz.— LXer Linux News

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