Enable Source Control
The Enable Source Control command allows you to enable or disable source control for an application project. Selecting this option on any file or folder, enables/disables source control for the whole project. After source control is enabled, the check in/out status of the various files are retrieved and displayed in the Project window.
Checked in. Available for check-out.
Checked out by another user. Not available for check-out.
Checked out locally. Can be edited and checked-in.