In October 2006, we decided to move over NXT documentation from being completely web-based to being written in DocBook so that we can generate HTML, JavaDoc, and PDF at will. We are rewriting much much of the documentation at the same time. Versions of the documentation numbered before v1.0 are incomplete, although the outline gives some idea of our intentions for it. In this version, version 0.1, not all of the information has been checked for accuracy yet. The most likely difficulties concern the following areas: corpus resources, ontologies, and object sets; validation; incomplete description of data set concepts. In addition, not all the formatting works, and the query reference manual has not been fully converted over to DocBook, so it is incomplete and hard to read in this version.