Fx protocol defines the methods provided by the host application to create parameters.
- FxPlug 3.1+
A plug-in that doesn't need the new functionality found in version 4 should simply conform to the version 1, 2, or 3 protocols. This will ensure compatibility with older plug-in host applications that might not support version 4.
This protocol is only available to FxPlug 3 plug-ins.