The CPN ML identifiers are alphanumeric sequences of letters, digits, primes/apostrophes (
'), and underscores (
_) — starting with a letter.
They are used for:
- Color sets
- Record color set field labels
- Value constructors
- Operators and function symbols
- Prefixes of place, transition, and page names when using the state space tool.
These identifiers are legal:
These are illegal, because they do not begin with a letter: