== Processing language for mono-lingual and internationalized
The main conclusion of #335 and #337, which is partly implied in the
definition of the processingLanguage is that the processingLanguage is
not needed for mono-lingual and for internationalized resources, and
this should be derived from the dc:language.
The concrete proposal is to add a non normative note indicating that:
"For internationalized resources and mono-lingual resources used in
body or target, the dc:language should be provided, and no processing
language should be set"