WinGate Schema is an object system that allows components to share structured data in a standardised and dynamic manner. It allows the creation of classes, members and subclasses and implements many standard types such as Boolean, String and Int32 and is extensible with custom types. A number of components within WinGate use Schema to pass objects to the event and policy systems.
Schema also has the ability to execute Schema Script and can access any schema objects you permit access to within the script. This way you can create components that allow the user to enter expressions and access schema objects within those expressions.