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Identifiers
Identifiers denote the following:
Identifiers can be of any length, but only the first 63 characters are significant.
- The first character of an identifier must be a letter.
- The characters that follow the first one must be letters, digits, or
underscores (no spaces).
Like reserved words, identifiers are not case-sensitive.
Qualified identifiers
When several instances of the same identifier exist, you might need to qualify the identifier with a unit identifier in order to select a specific instance.
The combined identifier is called a qualified identifier.
Examples
(* Identifiers *)
WriteLn
Exit
Real2String
(* Qualified identifiers *)
System.MemAvail (* unit = System, identifier = MemAvail *)
Dos.Exec (* unit = Dos, identifier = Exec *)
Crt.Window (* unit = Crt, identifier = Window *)
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