R_NaN
R_NaInt
R_NaReal
R_NegInf
R_PosInf
R_NaString
R_BlankString
R_EvalDepth
R_GlobalEnv
R_HistoryFile
R_HistorySize
R_Interactive
R_Is_Running
R_MissingArg
R_NilValue
R_PreciousList
R_RestoreHistory
R_tcldo
R_UnboundValue
R_Visible
R_Bracket2Symbol
R_BracketSymbol
R_ClassSymbol
R_CommentSymbol
R_DimNamesSymbol
R_DimSymbol
R_DollarSymbol
R_DotsSymbol
R_DropSymbol
R_LastvalueSymbol
R_LevelsSymbol
R_ModeSymbol
R_NamesSymbol
R_NaRmSymbol
R_RowNamesSymbol
R_SeedsSymbol
R_TspSymbol
R_CurrentExpr
ArrowCursor
BlankCursor
WatchCursor
CaretCursor
TextCursor
HandCursor
RConsole
CharacterMode
UserBreak
R_standardGeneric_ptr
R_Toplevel
R_ToplevelContext
R_GlobalContext