Profile: Those Engineers Ltd. offers a range of engineering services covering aeronautical, mechanical and electrical / electronic engineering. We provide spicycle, which is our engineering design product. It provides an easy to use schematic front end to our well established network simulator. It includes the facility to design and lay out printed circuit boards directly from netlists and schematic diagrams. Since all the processes are controlled using active X, we get automatic back annotation between schematics, netlists and simulation settings. We also offer modelmaker, it takes a much more pragmatic approach to component modeling by generating compact, efficient and configurable device models from own specification.