I looked at it and no it doesn't do editing, only validating.

On Mon, Feb 11, 2002 at 09:44:10AM -0600, John Larmour wrote:
> I haven't used it myself, but it sounds like Xeena may be the kind of thing you
> are looking for...
> http://alphaworks.ibm.com/tech/xeena
> 
> Jon Schewe wrote:
> 
> > I'm looking for an XML instance editor that validates against XML Schemas so
> > that the user doesn't create invalid documents and uses the schema to build
> > the interface, for things that are choices, and supports ensuring referential
> > integrity for keyref statements.  I'd preferably like something that's open
> > source and runs on Linux, but the target platform is Windows and if need be,
> > it can be commercial.  Any ideas?
> >
> > --
> > Jon Schewe | http://mtu.net/~jpschewe | jpschewe at mtu.net
> > For I am convinced that neither death nor life, neither angels
> > nor demons, neither the present nor the future, nor any
> > powers, neither height nor depth, nor anything else in all
> > creation, will be able to separate us from the love of God that
> > is in Christ Jesus our Lord. - Romans 8:38-39
> >
> > _______________________________________________
> > tclug-devel mailing list
> > tclug-devel at mn-linux.org
> > https://mailman.mn-linux.org/mailman/listinfo/tclug-devel
> 
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-- 
Jon Schewe | http://mtu.net/~jpschewe
For I am convinced that neither death nor life, neither angels 
nor demons, neither the present nor the future, nor any 
powers, neither height nor depth, nor anything else in all 
creation, will be able to separate us from the love of God that 
is in Christ Jesus our Lord. - Romans 8:38-39