# qooxdoo

## the new era of web development

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# 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