Thot library, Thot Editor and Amaya Thot is a generic system for the development of document centered applications based on the concept of structured active documents. It can be used for building interactive system as well as automatic processors. Currently the programs using the Thot Library and available in source form are Thot Editor (http://opera.inrialpes.fr/Thot) and Amaya (see http://www.w3.org/Amaya for more information). For more information about Amaya. see the README.amaya file and the documentation located in Thot/doc/amaya. For more information about Thot Editor. see README.thoteditor file and the documentation located in Thot/doc/thoteditor.