This link leads to a very basic discussion of the underlying principles, some links that may be of interest, and some tools I have found useful.
Scientific Calculators are capable calculators, typically with advanced graphing capabilities.
This link leads to a set of articles dealing with calculator programs used to support MA206. There is a similar program, nuweb.tcl that does the same thing for nuweb , and can be downloaded in either the documented nuweb version or the undocumented Tcl script . I use PGP as an email authentication and encryption tool. My public keys can be found here . A grep -like search utility Filter is a search utility designed to assist in searhing the SCA Ordinary and Armorial.