PLCnext Control Function Extension

A PLCnext Control Function Extension (in the following also called "Function Extension" or "app" for short) is a collection of functionalities bundled into one large file that can be understood and executed by the PLCnext Technology Runtime System. Each app may contain multiple different parts, that provide functionalities to the system in their own way. To tell the Runtime System how to execute each part, we group them into different types, which we will explore later.