Ak255proxyExt is the proxy extension used for any type of point made from the Ak255 Point Manager. included are the typical common proxy extension properties, as well as two container slots that are unique to the AK255 driver:

Both hold properties used in the protocol to fetch data points, and are automatically populated when you add a discovered point from the learn pane.

For general information on common proxy extension properties, refer to “ProxyExt properties” in the Drivers Guide.