identifier
An identifier is a name token. It may be a plain identifier (matching the IDENTIFIER lexer token), a delimited identifier (backtick-enclosed), or a quoted identifier (double-quote-enclosed) which allows reserved words as names.
Examples
Plain unquoted identifier
define AgeInYears: ...
Backtick-delimited identifier — allows spaces and reserved words
define `Initial Population`: ...
Double-quoted identifier — commonly used for expression names
define "Initial Population": ...
EBNF
identifier : IDENTIFIER | DELIMITEDIDENTIFIER | QUOTEDIDENTIFIER ;
Used In
aliasaggregateClausecodeDefinitioncodeIdentifiercodesystemDefinitioncodesystemIdentifierconceptDefinitioncontextDefinitionexpressionDefinitionexternalConstantidentifierOrFunctionIdentifierletClauseItemlibraryIdentifiermodelIdentifierlocalIdentifierparameterDefinitionqualifiedIdentifierqualifierreferentialIdentifiervaluesetDefinition