Hi,
Not a big deal, but the element resources/fileExtension seems not to be
supported when editing a Saxon config file. Some details there:
http://saxon.markmail.org/thread/mdgdftkssbhbsjzr
I just created a new file in oXygen, choosing "Saxon Config File".
Regards,
--
Florent Georges
H2O Consulting
http://h2o.consulting/