1789 Binary Property List In the OS X, iOS, NeXTSTEP, and GNUstep programming frameworks, property list files store serialized objects. It is the standard way to save and load data between the internal representation within the objects defined in an Objective-C program and disk files, in order to store program settings and other data. This is the binary version but there is also an XML version of the format. Binary 1 Digital Preservation Department / The National Archives 06 Feb 2017 06 Feb 2017 fmt/984 PUID plist File extension nib File extension aae File extension iMovieProj File extension ezdraw File extension 1345 Binary Property List bplist00 1 Absolute from BOF 0 0 62706C6973743030 Has lower priority than 1670 Apple Safari Webarchive