#95 in the Part1 FPDAM

[MURATA Makoto (FAMILY Given)]

> If we drop an unnecessary occurrence of a namespace in #95 of the 
> Part1 FPDAM, we do not have to introduce another change for 
> cancelling this change in the FDAM for Part4.

Please ignore this proposal.  My rewrite fails to require that the
relationship type be http://schemas.openxmlformats.org/officeDocument/2006/customXml

Cheers,
Makoto