David Buck, the developer of the popular CAD package RiscCAD, came to tell us something about the world of computer-aided design. Starting with a short history of the field, David looked back to the days when CAD software had been command-line driven and all user-interaction was carried out via the keyboard. This couldn’t be further from the way that RiscCAD works, since it has been designed with the RISC OS interface in mind from the start. We were then treated to an in-depth demonstration of the software, showing what can be achieved in the right hands.