1. Introduction of XML editors Naruki Mtisuda Wakayama Univ.

2. Process of editing XML documents Write an XML document document-based editor or data-based editor? Check validity of the document require DTDs (Document Type Definition) Transform to a formatting document (HTML, XSL-FO, etc.) with a style-sheet Preview the result of transformation with rendering tools (browser, fop, etc.)

3. Document-based XML editors XmlWrite ver 1.3 http://www.roxes.com/start.html Free software (ROXES Technologies) Built-in preview tool ver 2.0 http://www.oxgenxml.com/ Commercial software (SyncRO Soft Ltd.) Support of validation Unnamed xml editor (under development in Wakayama Univ.) Open software (in future) (We aim to) Control editing operation for leading users to valid documents

4. Process of editing XML documents (in graphical view) Write Check validity TransformPreview XML doc DTD Style- sheet Formatting doc Valid doc modify revise

5. Key idea of our editor Automatic indentation Maintaining tree structure Automatic tag insertion Well-formed mode: pairs of start-tag and end-tag Valid mode: automatic creation of document structure Limitation of tag creation Valid mode: rejecting creation of invalid tags