Suggested clarification on internal-destination and external-destination properties

Editors:

The following constraint appears both on the internal-destination[1] and 
external-destination[1] properties in the 1.1WD:

"At least one of the external-destination and internal-destination 
properties should be assigned. If both are assigned, the system may 
either report the error, or use the internal-destination property."

The second sentence appears to contradict the first ("At least 
one...should") by indicating that having both assigned would be an 
error.  I would recommend rewriting the above constraint to either of 
the following, depending on your original intent:

"Only one of the external-destination and internal-destination 
properties should be assigned. If both are assigned, the system may 
either report the error, or use the internal-destination property."  
(Switching "At least" to "Only one")

or

"At least one of the external-destination and internal-destination 
properties should be assigned. If both are assigned, the system may 
either report it as an error, or use the internal-destination 
property."  (Switching "the error" to "as an error")

I suspect the former is what was intended.

Thanks,
Glen Mazza
Apache FOP Team

[1] http://www.w3.org/TR/2003/WD-xsl11-20031217/#internal-destination
[2] http://www.w3.org/TR/2003/WD-xsl11-20031217/#external-destination