Creates a region for documenting API commands using formal constructs such as regular grammar. Because the formal definitions are not widely understood, they can be hidden by default.

This template should be used after {{syntaxbox top}} and before {{syntaxbox bottom}}. Ideally, it should be used after the {{API command}} that it describes. In order to make the formal command description hidden by default, you must specify as much when you use the Syntaxbox top template.

Usage