Detailed comments and suggestions on the spec should go to the addresses
for comments given in the specs:

  www-xpath-comments@xxxxxx
  xsl-editors@xxxxxx

so that they get archived separately from general discusions of
XPath/XSLT.

XPath says:

"Both XSLT and XPointer extend XPath by defining
additional functions; some of these functions operate on the four
basic types; others operate on additional data types defined by XSLT
and XPointer."

XSLT or XSLT should probably say something similar for extension
functions.

Jon Smirl wrote:
> 
> The XSL spec talks about five data types:
>     string, number, boolean, node-set, result-tree
> 
> XT allows me to set variables to Java objects (ObjectVariant) and I'd like
> to modify Saxon to support this as well.  Should there be a documented sixth
> data type of 'opaque' which is only used for passing things between
> extension functions? It would be defined as error if used in any other way.
> 
> Jon Smirl
> jonsmirl@xxxxxxxxxxxx
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list



 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list