SCEPTRE (System for Circuit Evaluation and Prediction of Transient Radiation Effects) is a general purpose circuit analysis program which provides all three major analyses, AC, DC, and transient analysis, on either linear or nonlinear networks. It employs a free-form input language and state variable methods to simulate problems of interest to electrical engineers. This package does not include online documentation. Documentation in PDF format, in English and German, is available in the directory work/sceptre*/doc.