Developer file used by Mac OS X applications that implement App Sandboxing, which was required for all Mac App Store apps as of June 1, 2012; saved in the .PLIST format and contains entitlements, or privileges, enabled for the app when it runs.

Example entitlements include file read and write access, as well as access to network resources, printers, music and picture folders, and location services. NOTE: When App Sandboxing is enabled in Xcode, the program creates a file called MyProject.entitlements (where MyProject is the project name) in the root directory of the project.