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# Tutorial: Create Reusable Method Content

The purpose of this tutorial is to understand the variety of ways in which the content in a base plug-in can be extended and modified by content in other plug-ins.

The ‘Create Core Method Content' tutorial shows how to create new content in a plug-in. In this tutorial we will see how to extend existing content in a plug-in.

Note: In the following exercises we create separate Content Packages to demonstrate each of the ways that a method plug-in can modify content in another plug-in (i.e. extends, replaces, and/or contributes). This is for easy illustration of the effect of applying each type of method element variability.

Managing content via the Method Plug-in mechanism is a key and very powerful feature of EPF Composer. This tutorial explores the effects of the different variability types in the following exercises.