p:language

[[
The exact format of the language string is *implementation
defined<http://www.w3.org/XML/XProc/docs/langspec.html#dt-implementation-defined>
* but should be the same as the xml:lang attribute.
]]
I'm not sure to understand correctly the subtlety there ; do you mean

1) ...the same as the xml:lang attribute **if present**
2) ...the same syntax as xml:lang (in such a case, it could be
implementation defined ?)

Mohamed

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