Each package has at its beginning a detailed description of its topics and, if necessary, some explanations as to why we believe it necessary to improve a standard package. So in order to get any detailed information on a particular package take a look inside this package. Note that some packages need additional packages which must be loaded. Most packages are in a steadily continuing process of correction, streamlining, and extension. We shall welcome any suggestions which will help to improve these packages.
Most notebooks result from seminars on various topics.