XML output and &latex; entity undefined

[Karl Berry]

Hi Gavin - another long-pending thing I haven't had a chance to get to the
bottom of.  The TexinfoXML file generated here,
  http://svn.gna.org/viewcvs/*checkout*/latexrefman/trunk/latex2e.xml
visited in a browser, gives the error:

XML Parsing Error: undefined entity
Location: http://svn.gna.org/viewcvs/*checkout*/latexrefman/trunk/latex2e.xml
Line Number 10, Column 22:<settitle spaces=" ">&latex;2e unofficial ...

As far as I know this document is not doing anything tricky.  It does use
@LaTeX{} in the @settitle, but the &latex; entity is defined in the
specified dtd 
  http://www.gnu.org/software/texinfo/dtd/6.0/texinfo.dtd
as far as I can see.

So something is awry, but sadly it's not apparent to me what it is.
Hopefully it's something obvious?  The Texinfo source is
  http://svn.gna.org/viewcvs/*checkout*/latexrefman/trunk/latex2e.texi 

For context, the project home page is http://home.gna.org/latexrefman.

Thanks,
K