If the current file is part of a version control system (VCS), the VCS pop-up menu, shown in Figure 5.1, indicates the read/write database status of the file. The VCS pop-up menu icon indicates whether you can modify the file. See "Common VCS Operations" for additional details about the icons and their meanings.

Using this pop-up menu, you can get a new copy of your file, checkout the file for modification, make the file writable so that you can modify it without checking it out, and perform other operations.

For more information about version-control software, refer to "Using Version Control Systems".