| SyntaxModule = "syntax" "module" Name "{" Using* SyntaxModuleMember*  "}";

Syntax module is an extension unit. The parser can consist of one or more syntax modules.  The syntax modules can:

The referenced syntax modules can reside in the same project as well as in an external library.

syntax module JsonParser
{
}

See also

Name
Using
SyntaxModuleMember
NamespaceBody