%c%	Concatenation
%R%	Concatenation
%|%	or
ALNUM	CharacterClasses
alnum	ClassGroups
ALPHA	CharacterClasses
alpha	ClassGroups
Anchors	Anchors
ANY_CHAR	CharacterClasses
any_char	ClassGroups
as.regex	as.regex
ASCII_ALNUM	CharacterClasses
ascii_alnum	ClassGroups
ASCII_ALPHA	CharacterClasses
ascii_alpha	ClassGroups
ASCII_DIGIT	CharacterClasses
ascii_digit	ClassGroups
ASCII_LOWER	CharacterClasses
ascii_lower	ClassGroups
ASCII_UPPER	CharacterClasses
ascii_upper	ClassGroups
as_lower	ReplacementCase
as_upper	ReplacementCase
Backreferences	Backreferences
BACKSLASH	SpecialCharacters
BLANK	CharacterClasses
blank	ClassGroups
BOUNDARY	WordBoundaries
capture	capture
CARET	SpecialCharacters
case_insensitive	modify_mode
CharacterClasses	CharacterClasses
char_class	char_class
char_range	ClassGroups
ClassGroups	ClassGroups
CLOSE_BRACKET	SpecialCharacters
CLOSE_PAREN	SpecialCharacters
CNTRL	CharacterClasses
cntrl	ClassGroups
Concatenation	Concatenation
DGT	CharacterClasses
dgt	ClassGroups
DIGIT	CharacterClasses
digit	ClassGroups
DOLLAR	SpecialCharacters
DOT	SpecialCharacters
duplicate_group_names	modify_mode
END	Anchors
engroup	capture
escape_special	escape_special
exactly	Anchors
format.regex	format.regex
free_spacing	modify_mode
GRAPH	CharacterClasses
graph	ClassGroups
GRAPHEME	CharacterClasses
grapheme	ClassGroups
group	capture
HEX_DIGIT	CharacterClasses
hex_digit	ClassGroups
ICU_REF1	Backreferences
ICU_REF2	Backreferences
ICU_REF3	Backreferences
ICU_REF4	Backreferences
ICU_REF5	Backreferences
ICU_REF6	Backreferences
ICU_REF7	Backreferences
ICU_REF8	Backreferences
ICU_REF9	Backreferences
is.regex	as.regex
lazy	repeated
literal	literal
lookahead	lookahead
lookbehind	lookahead
LOWER	CharacterClasses
lower	ClassGroups
modify_mode	modify_mode
multi_line	modify_mode
negated_char_class	char_class
negate_and_group	char_class
negative_lookahead	lookahead
negative_lookbehind	lookahead
NEWLINE	CharacterClasses
newline	ClassGroups
NOT_BOUNDARY	WordBoundaries
NOT_DGT	CharacterClasses
not_dgt	ClassGroups
NOT_SPC	CharacterClasses
not_spc	ClassGroups
NOT_WRD	CharacterClasses
not_wrd	ClassGroups
no_backslash_escaping	modify_mode
one_or_more	repeated
OPEN_BRACE	SpecialCharacters
OPEN_BRACKET	SpecialCharacters
OPEN_PAREN	SpecialCharacters
optional	repeated
or	or
or1	or
PIPE	SpecialCharacters
PLUS	SpecialCharacters
PRINT	CharacterClasses
print.regex	format.regex
printable	ClassGroups
PUNCT	CharacterClasses
punct	ClassGroups
QUESTION	SpecialCharacters
recursive	recursive
REF1	Backreferences
REF2	Backreferences
REF3	Backreferences
REF4	Backreferences
REF5	Backreferences
REF6	Backreferences
REF7	Backreferences
REF8	Backreferences
REF9	Backreferences
regex	regex
repeated	repeated
ReplacementCase	ReplacementCase
single_line	modify_mode
SPACE	CharacterClasses
space	ClassGroups
SPC	CharacterClasses
spc	ClassGroups
SpecialCharacters	SpecialCharacters
STAR	SpecialCharacters
START	Anchors
token	capture
UNMATCHABLE	CharacterClasses
UPPER	CharacterClasses
upper	ClassGroups
whole_word	WordBoundaries
WordBoundaries	WordBoundaries
WRD	CharacterClasses
wrd	ClassGroups
zero_or_more	repeated
