13.5.3 Propagation model plugin To create or modify a library element containing parameters of a particular propagation model, select the Propagation model command from the Library pull-down menu or directly with CTRL+SHIFT+P . Since the propagation models are implemented as plugin, it is possible to include a new propagation model using the .jar installer and to add it to the list of existing pre-defined models. Any of the propagation models is then selectable as shown in the picture below:  Figure 298: Example of the propagation model plugin library     More detailed information on specific propagation models is available in ‎ANNEX 17: