| Subject | English | Icelandic |
| comp., MS | extensible rights markup language | XrML (A proposed standard digital rights management (DRM) markup language which enables users to specify rights and conditions associated with resources, such as digital content or Web services) |
| comp., MS | Extensible Stylesheet Language | XSL (An XML vocabulary that is used to transform XML data to another form, such as HTML, by means of a style sheet that defines presentation rules) |