R_NaN R_NaInt R_NaReal R_NegInf R_PosInf R_tmp m_one m_tiny m_zero RNG_Table RNG_kind CharacterMode UserBreak R_GlobalEnv R_NilValue R_UnboundValue R_MissingArg R_Bracket2Symbol R_BracketSymbol R_ClassSymbol R_DimNamesSymbol R_DimSymbol R_DollarSymbol R_DotsSymbol R_DropSymbol R_LevelsSymbol R_ModeSymbol R_NamesSymbol R_NaRmSymbol R_RowNamesSymbol R_SeedsSymbol R_TspSymbol R_LastvalueSymbol R_CommentSymbol R_NaString R_BlankString R_PreciousList R_Visible R_EvalDepth