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A general description is here.
Packages may now use a file of common macro definitions in their help files, and may import definitions from other packages.
When ‘x’ is missing and ‘names’ is not false (including the default value), ‘Sys.getenv(x, names)’ returns an object of class ‘"Dlist"’ and hence prints tidily.
‘embedFonts()’ now defaults to ‘format = "ps2write"’ for ‘.ps’ and ‘.eps’ files. This is available in Ghostscript 9.x (since 2010) whereas the previous default, ‘format = "pswrite"’, was removed in 9.10.
‘file.info(, extra_cols = FALSE)’ allows a minimal set of columns to be computed: on some systems this can be significantly faster with large file lists.
‘dput()’ and friends gain new controls ‘"hexNumeric"’ and ‘"digits17"’ which output double and complex quantities as, respectively, binary fractions (exactly, see ‘sprintf("%a")’) and as decimals with up to 17 significant digits.
For consistency with ‘[dpq]lnorm()’, ‘rlnorm(sdlog = 0)’ is now an error and so returns ‘NaN’.