Disc label created with the PressIt or ExPressIt disc labeling system.

File created by Pro/ENGINEER, a program used for 3D product design; contains an instance of a part (.PRT) file, which defines specific parameters for a generic part.

XPR files accelerate the loading of a part instance since Pro/ENGINEER does not have to load all "family tree" and "generic" geometry part information first. NOTE: XPR files can be loaded by Adobe Acrobat Pro Extended, which includes support for several types of 3D graphics. They may not be supported by the standard version of Acrobat Pro.

XML project created with oXygen XML Editor (written "<oXygen/> XML Editor"), a program used to create and edit .XML files and XML-based applications; contains references to XML files, user workspace settings, version control system connection information, and other project properties.

XPR files are used for developing and packaging XML-based programs, such as Web, database, data exchange applications. During development, oXygen projects can be used for XML validation as well as debugging .XSLT transformations and XQuery queries.