Editors in Jboss-IDE 1.4 very fine, but I have any problems with XML and JSP documents . 1) Can I create mapping between namespace url's and document schemas ? For example, XSL script for creating XHTML documents use 2 namespaces - xhtml: and xsl: I don't can create DOCTYPE defenitions - i use 2 mixed doctypes, and have xml validation error messages . Create own custom DTD for all mixed document - too bad, IMHO. 2) I create JSP as XML documents, with declarations of taglibs in xmlns parameters ( JSP 2.0 syntax ). Check syntax and compilations of jsp work fine, but context assistant in jsp editor don't work.