MHEG-5 is a standard devised for the middleware of digital teletext services in the United Kingdom. Officially ISO/IEC 13522-5 it was evolved from the standards devised by the Multimedia and Hypermedia information coding Expert Group (MHEG) and specifies the classes of multimedia objects available and their interchange.
Being based on the multimedia standard MHEG allows for much more than simple page display of teletext, for example MHEG-3 covers scripting and MHEG-6 interactive applications. It is an object orientated language with visible objects, groups, inheritance, links and programs. A MHEG-5 presentation is initialised by an application which loads a scene which includes the ingredients list of visibles and also the non-visible links, programs and variables.