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‘R CMD check’ ‘NOTE’s on the use of these non-API entry points have been upgraded to ‘WARNING’s in preparation for removing declarations and, where possible, hiding these entry points: ‘R_nchar’, ‘VECTOR_PTR’, ‘R_tryWrap’, ‘Rf_NonNullStringMatch’, ‘Rf_isValidString’ ‘Rf_GetOption’, ‘SET_FRAME’, ‘SET_HASHTAB’, ‘SET_ENCLOS’, ‘STDVEC_DATAPTR’, ‘SET_S4_OBJECT’, ‘UNSET_S4_OBJECT’, ‘SET_NAMED’, ‘R_lsInternal’, ‘Rf_lazy_duplicate’, ‘EXTPTR_PROT’, ‘EXTPTR_PTR’, ‘EXTPTR_TAG’, ‘NAMED’, ‘FRAME’, ‘HASHTAB’, ‘IS_S4_OBJECT’, ‘BODY’, ‘FORMALS’, ‘CLOENV’, ‘ENCLOS’, ‘Rf_isFrame’, ‘OBJECT’, ‘SET_TYPEOF’, ‘ENVFLAGS’, ‘SET_ENVFLAGS’, ‘SET_FORMALS’, ‘SET_BODY’, ‘SET_CLOENV’, ‘STRING_PTR’, ‘DATAPTR’, ‘XTRUELENGTH’, ‘R_duplicate_attr’, ‘R_shallow_duplicate_attr’, ‘getConnection’, ‘LEVELS’, ‘SETLEVELS’, ‘R_data_class’, ‘SET_GROWABLE_BIT’, ‘TRUELENGTH’, ‘SET_TRUELENGTH’, ‘SETLENGTH’.