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A general description is here.
codoc() was missing some default value mismatches with unescaped backslashes, e.g. final="\\" needs to be written as final="\\\\" in the Rd file.
The reports on values now give strings in the original quoted format (with \ and " escaped).
R CMD check (via massage-eExamples.pl) now checks all examples with a 7 inch square device region on A4 paper, for locale-independence and to be similar to viewing examples on an on-screen device.
If a package declares an encoding in the DESCRIPTION file, the examples are assumed to be in that encoding when running the tests. (This avoids errors in running latin1 examples in a UTF-8 locale.)