This is Temporal XML Schema (tauXSchema) from the University of Arizona. 
We start with a brief overview of the system, followed by a list of further 
documentation.


===============================================================================
INTRODUCTION
===============================================================================
tauXSchema is a system for constructing and validating temporal XML documents. 
tauXSchema extends XML Schema with the ability to define temporal
element types. A temporal element type denotes that an element can vary over
time, describes how to associate temporal elements across snapshots, and
provides some temporal constraints that broadly characterize how a temporal
element can change over time. In tauXSchema, any element type can be
turned into a temporal element type by including a simple temporal annotation
in the type definition.


===============================================================================
FURTHER READING
===============================================================================
A complete set of documentation can be found on the project wiki:

http://cgi.cs.arizona.edu/apps/tauXSchema/

There is also further information, including installation instructions, in the
docs/ directory included in this distribution.

