4.0.6 build 423. April 23, 2020.
The "Plugin proxy" module is the adapter between the main program and modules written in other programming languages. Unlike "Python plugin" module, which also provides access to API, this API interface has more features, but developing it is also more complicated.
The module uploads the DLL developed by you and calls API functions from it.
After installation, in the module folder, you can find an example for Visual C++ 2015 that implements the functions of data filter, data parser, and data export modules.
Download | Documentation
How to enable this plugin
The figure below shows how to select the plugin on the "Modules" page.
Fig.1. Selecting the plugin.