I don't know much XML yet, but I was thinking about how the file format is sort of coded in the dtd file. If your .dtd is copyrighted and you don't share, isn't that sort of preventing people from ...

Anyone know of an app / code / library that would take a DTD or XSchema and build an interface for editing XML files in a visual way? Basically something that would provide some sort of nice GUI ...

Just feed in a DTD (document type definition) or an XML Schema and — presto! — you have Java classes that can marshal, unmarshal, and check data constraints.

DXML A Second Generation XML ToolkitKevin WittmerListing 2. Finalized DTD file used by the xgen command line tool to generate a set of Java interfaces and classes that represent the document tree.

DXML A Second Generation XML ToolkitKevin WittmerListing 1. XML file containing a sample set of Keplerian parameters used to model our DTD.