... Appendix - User's Guide for SNEAKERS . SNEAKERS is a single-user, mouse-driven, windowed system, which is fairly simple to learn and use. To start the system, type . ... The system will start and create the main window. The goal of the system is to design a tower by adding components similar to to an abstract design. You start by giving the requirements for the design. ... The design is evaluated upon completion for its ability to meet the requirements. rdouglas@stsci.edu ...