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2.3 Identifiers
2.3 Identifiers
- 1
- Identifiers are used as names and also as reserved words.
- 2
- identifier ::=
letter {[underline] letter_or_digit}
letter_or_digit ::= letter | digit
letter ::= upper_case_letter | lower_case_letter
- 3
- All characters of an identifier are significant, including any underline character inserted between a letter or digit and an adjacent letter or digit. Identifiers differing only in the use of corresponding upper and lower case letters are considered as the same.
- 4
- Examples:
- Note:
- 5
- No space is allowed within an identifier since a space is a separator.
- 6
- References:

- digit 2.1

- lower case letter 2.1

- name 4.1

- reserved word 2.9

- separator 2.2

- space character 2.1

- upper case letter 2.1
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