Sample ASCII Pmesh .x file

Over the years, I've been collecting, generating, and trying to comprehend .x files.
I have found it educational.

I searched everywhere on the internet for a progressive mesh example in ascii text format, and cannot find one.
I am just certain it can or could be represented. I have examined the template files, but have no idea what
order they would theoretically appear in.
I wonder if it would load... Anybody?
Binaries are available in plenty. So, it just doesn't work in ascii at all???