Encoding format for the nodeToDocument flow service

Hi can someone clarify what the default encoding for the nodeTodocument flow in WM 6.5 is ?

I assume it is UTF-8.

Apologies never read the documentation properly.
As stated in the Admin guide:
Specifies the encoding the server is to use when reading and writing text to the network.
This setting has no effect on text that is explicitly encoded in a particular encoding. The
default is UTF-8.