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Some non-API entry points have been added to those reported by ‘R CMD check’: ‘COMPLEX0’, ‘ddfind’, ‘DDVAL’, ‘ENSURE_NAMEDMAX’, ‘ENVFLAGS’, ‘FRAME’, ‘HASHTAB’, ‘INTERNAL’, ‘IS_ASCII’, ‘IS_UTF8’, ‘LEVELS’, ‘NAMED’, ‘PRSEEN’, ‘REAL0’, ‘SET_PRSEEN’, and ‘SYMVALUE’. Any declarations for these in public header files will be removed in the near future, and they will be hidden where possible.