Simple protocols can be described with natural language and pictures. This description is no longer adequate as protocols become more complex, or more people get involved. Formal Description Techniques (FDTs) have been developed to convey this information clearly and unambiguously (and as a basis for correctness verification) but FDT-based specifications tend to be long and hard to follow.  In order to help the user understand and use complex protocols, we have integrated informal graphical techniques with the current formal techniques. We have developed an approach for the generation of pictures directly from formal models