OpenCms Online/Offline Project
By default there are two projects in OpenCms; Online and Offline. The Online Project contains files currently published. No documents in the Online project can be edited.The Offline Project contains all of the files in the Virtual Filesystem. In a way, it is the master working copy of the VFS. When working with a web page, you will be in essence working on the Offline version of the page; any changes you make on the file will not be reflected on the web until the page gets published.