DocBook 5 Howto: Missing Section 'Naming and versioning DocBook customizations'?

Hi,

the latest version of the "DocBook V5.0 Transition Guide"[1] is missing 
the section "Naming and versioning DocBook customizations". The version 
from 2006-05-16 contains still this section.

Is this an oversight? :)

Bye,
Tom

[1] http://docbook.org/docs/howto

-- 
Thomas Schraitle