Hi JoN

You can add configuration properties for the Adapters as an extension of Lightstreamer Server configuration, through the "param" elements in the "adapters.xml" file.
These configuration properties are received by the Adapter in its "init" call.

The pathname of the directory where the "adapters.xml" file resides is also received in the "init" call; this allows the Adapter to implement its own configuration technique.

The ".properties" file you see is probably a custom configuration implemented in your specific Data Adapter.

Dario