This plug-in contains simplifications of the Eclipse Workbench UI, which may not be compatible with other simplifications. Thus, the intention of this plug-in is to separate composable from non-composable contributions. Non-composable functionalities and simplifications are only allowed in this plug-in and must be avoided in others. As a result, composable functionalities should rather be located in other plug-ins, as we will not include this plug-in when composing multiple Papyrus DSMLs, viewpoints, etc.