>> No -- it is perfectly legal - -but you MUST declare the encoding to
BE Marc8 in the XML prolog,

> Wait, how canyou declare a Marc8 encoding in an XML 
> decleration/prolog/whatever it's called?

Nope, you can't do that.  There is no approved name for the MARC-8
encoding.  As Andy said, the closest you could get would be to make up
an experimental name, like x-marc-8, but no tool in the world would
recognize that.

Ralph