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A general description is here.
‘quartz.save()’, formerly an undocumented part of ‘R.app’, is now available to copy a device to a ‘quartz()’ device. ‘dev.copy2pdf()’ optionally does this for PDF output: ‘quartz.save()’ defaults to PNG.
Most operations which can sensibly be done with long vectors now work: others may return the error ‘long vectors not supported yet’. Some of these are because they explicitly work with integer indices (e.g. ‘anyDuplicated()’ and ‘match()’) or because of other limits (e.g. of character strings or matrix dimensions) would be exceeded or the operations would be extremely slow.