Other notations

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For a description of the notations used for numbers, see section $[*]$ .

. + -: These are used in numbers, and may also occur anywhere in an identifier except as the first character. A delimited plus or minus sign by itself is also an identifier. A delimited period (not occurring within a number or identifier) is used in the notation for pairs (section $[*]$ ), and to indicate a rest-parameter in a formal parameter list (section $[*]$ ). A delimited sequence of three successive periods is also an identifier.
( ): Parentheses are used for grouping and to notate lists (section $[*]$ ).
: The single quote character is used to indicate literal data (section $[*]$ ).
: The backquote character is used to indicate almost-constant data (section $[*]$ ).
, ,@: The character comma and the sequence comma at-sign are used in conjunction with backquote (section $[*]$ ).
": The double quote character is used to delimit strings (section $[*]$ ).
: Backslash is used in the syntax for character constants (section $[*]$ ) and as an escape character within string constants (section $[*]$ ).
0B D B D
0: Left and right square brackets and curly braces are reserved for possible future extensions to the language.
: Sharp sign is used for a variety of purposes depending on the character that immediately follows it:
: These are the boolean constants (section $[*]$ ).
: This introduces a character constant (section $[*]$ ).
(: This introduces a vector constant (section $[*]$ ). Vector constants are terminated by ) .
#e #i #b #o #d #x: These are used in the notation for numbers (section $[*]$ ).