Tony Clark and Ulrich Frank gave a talk at this year’s PoEM, which took place from Nov. 28th to Dec . 1st in Vienna. Based on a description of the reflexive, multi-level language architecture, Ulrich Frank demonstrated the latest version of XModelerML and showed, among other things, how the creation and use of UML class diagrams in teaching can be significantly enhanced by XModelerML. Tony presented XEditor, a textual editor for creating multi-level models and programs that allows to enrich code with graphical representations. The corresponding paper is available here.