EDD formatting is not meant for the faint hearted. In typical SGML ideology a "End User" is supposed to write text and not to define EDD rules. This class distinction certainly doesn't apply to the place I work. I think that documentation is too difficult reading (badly organized in some areas). Well the system is very complex and its not easy for technical writers. Anyhow, I think that EDD is a fine piece of work and that once you master it you can very efficiently maintain and modify layouts. The only trouble is bad XML support (you suffer before you understand how to import and export, no XSL, old XLink and more). Personally, I only know the basics and just don't have time to do more ...