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A general description is here.
dQuote() and sQuote() now use directional quotes by default under RGui. You might prefer options(useFancyQuotes=FALSE) when running Rterm if the console font does not have these quotes: see the rw-FAQ.
'=' within -e expression is no longer interpreted as setting
an environment variable.
'=' within '-e expression' on the command line is no longer interpreted as setting an environment variable.
Using a modal widget from Rterm (e.g. select.list) is now far more likely to be forced to the front.
Rcnmd INSTALL --docs=txt etc works (for a single type, except 'chm' which is equivalent to 'all' nowadays).