text:relative-tab-stop-position seem inconsistent

Hi

Regarding text:relative-tab-stop-position is seems weird that you can't 
specify it for paragraph properties, when the description in 19.857 talks 
about paragraphs.

And tab-stops refers to a parent element, but nowhere up the chain can 
text:relative-tab-stop-position attribute be specified.

It's a pretty important obmission since OOo seems to store the same inforation 
in settings.xml as <config:config-item config:name="TabsRelativeToIndent" 
config:type="boolean">false</config:config-item>

That seems a rather inconsistent place to store such vital information for 
reproducing the same output.

best regards
Casper Boemann