doc/concepts.tex, doc/syntax.tex: Replace `\textsf{...}' by `@|...|'.
authorMark Wooding <mdw@distorted.org.uk>
Thu, 8 Aug 2019 00:17:15 +0000 (01:17 +0100)
committerMark Wooding <mdw@distorted.org.uk>
Thu, 8 Aug 2019 00:19:58 +0000 (01:19 +0100)
Also, replace an enterprising combination of the `quote' environment
with `\textsf' by `prog'.

These were all very old.


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