These pages give some foundational knowledge about the building blocks of the App SDK - plugins and events:

Plugins

Describes the plugins - the building blocks in a V-Ray scene.

Plugin Parameters

Describes the parameter types, how to manipulate parameters, default values and other details.

Plugin Categories

Describes the categories to which plugins can belong. Plugins can be Lights, Materials, Textures, etc.

Events

Describes how to handle events and gives notes about performance and thread safety.

Plugins, Classes and Categories API

Describes some aspects of the plugins, classes and categories API in Python and Node.js