If you use the configuration setting debug yes or the corresponding command-line option liblouisutdml will do additional eror checking. It will print messages about such things as duplicate lines in a semantic file or attempts to assign the same xml tag to diferent actions or styles. John -- John J. Boyer; President, Chief Software Developer Abilitiessoft, Inc. http://www.abilitiessoft.com Madison, Wisconsin USA Developing software for people with disabilities For a description of the software, to download it and links to project pages go to http://www.abilitiessoft.com