Extended features are classified into 2 types, Type-J*1 and Type-C*2, depending on the development environment.
Type-J*1 extended features
These are features (applications) that are developed using Java.
Type-C*2 extended features
These are features (applications) that are developed using C language.
*1 Embedded Software Architecture Application Java language version
*2 Embedded Software Architecture Application C language version
You can check which type of extended features is in use. Check the "Type" column of the list displayed on the Startup Setting screen or Extended Feature Info screen in "Extended Feature Settings".
Control Panel
Web Image Monitor
For details about the Extended Feature Settings screen, see Extended Feature Settings.