Auditing library was created in order to allow more detailed logging for software created by DataQuest company.
Later it grew to be an Open Source library that is now used by many Tcl developers and DQ company itself.

One of the major features is ability to log not only text, but contents of variables or additional information. While the actual log file will contain only textual information, audit package also creates additional file that contains both textual information and additional data.

You can find out more by checking out Sample usage and Browser pages.