Package item defines CSS items in the tree produced by a parser.

TokenIsBlockStart returns true for a <(-token>, <{-token> or <[-token>.

TokenIsDashndashdigitIdent returns true for a token that is a <dashndashdigit-ident>: an <ident-token> whose value is an ASCII case-insensitive match for "-n-*", where "*" is a series of one or more digits.

TokenIsInteger returns true for a token that is an <integer>: a <number-token> with its type flag set to "integer".

TokenIsNdashdigitDimension returns true for a token that is a <ndashdigit-dimension>: a <dimension-token> with its type flag set to "integer", and a unit that is an ASCII case-insensitive match for "n-*", where "*" is a series of one or more digits.

TokenIsNdashdigitIdent returns true for a token that is a <ndashdigit-ident>: an <ident-token> whose value is an ASCII case-insensitive match for "n-*", where "*" is a series of one or more digits.

TokenIsNDimension returns true for a token that is a <n-dimension>: a <dimension-token> with its type flag set to "integer", and a unit that is an ASCII case-insensitive match for "n".

TokenIsSignedInteger returns true for a token that is a <signed-integer>: a <number-token> with its type flag set to "integer", and whose representation starts with "+" or "-".

TokenIsSignlessInteger returns true for a token that is a <signless-integer>: a <number-token> with its type flag set to "integer", and whose representation starts with a digit.