I am "defining" an XML schema.
In fact I'm not really writing any schema but I am writing an XML writer and
reader for my data.
It's all custom XML and I would like it to be XML tool friendly.

I will have an element, lets call it <text/> which will be in the document
in great quantity and it should always have:
xml:space="preserve"
on.

Now, for the sake of clarity and being compact, I would like to omit this
declaration on every <text> tag, but somehow let it be know (without
downloading the unexistant so far XMLNS file).

How do I do that?