7. The method as described in claim 1 , wherein the programming language comprises: at least one MediaItems Module serving as a description unit for the alternative media items within said multimedia applications, at least one Layout Module which organizes said alternative media items into regions on the visual rendering surface of a mobile display device, and the Adaptation Module controls a context-aware adaptation of distributed multimedia applications by referencing elements of the MediaItems Module.
7. The method as described in claim 1 , wherein the programming language comprises: at least one MediaItems Module serving as a description unit for the alternative media items within said multimedia applications, at least one Layout Module which organizes said alternative media items into regions on the visual rendering surface of a mobile display device, and the Adaptation Module controls a context-aware adaptation of distributed multimedia applications by referencing elements of the MediaItems Module. 9. A method for operating a middleware framework supporting processing of an XML-based description of an adaptive mobile application or presentation according to claim 7 , wherein said middleware framework allows each running mobile multimedia application to specify media each running mobile multimedia application wants to use and relationships between these media, calculates adaptation possibilities of mobile multimedia applications and controls an adaptation process.