Syntax Diagrams¶
A short summary of the elements used in syntax diagrams.
| Syntax symbol | Description |
|---|---|
| := | production rule ("non-terminal can be expanded to ...") |
| { ... } | 0..N occurrences ("*") |
| [ ... ] | 0..1 occurrences ("?") |
| ( ... ) | grouping |
| ... | ... | alternative |
| ' ... ' | literal |
| < ... > | placeholder for literal |
| ? ... ? | comment |