When working with documents, you often find the need to maintain versions of documents. This is helpful to manage content, compare changes across document versions. Also, maintaining versions is relevant and imperative in a collaborative authoring environment. In a collaborative environment, more than one writer can be working on the same document. Often even on same parts of one document. To allow you to work in this type of an environment, FrameMaker ships with connectors to the following content management systems (CMS):