Papyrus UML Modeling tool. Papyrus is a UML tool that provide very advanced facilities for customizing the tool. You will find in this page tutorials and examples illustrating the usage of all this custom facilities. Developers may go to the Papyrus wiki to know more about the design of Papyrus and questions may be asked to the Papyrus forum. In addition to the documentation available through this page, you will find documentation in the online help of the tool.