[libreoffice-users] Why does writer create automatic styles for every new element?

Hi!

When I create a new Writer document, each element I enter in the 
document (like a heading or paragraph) adds new elements to 
<office:automatic-styles> in "content.xml", even though I do not use any 
direct formatting. So, selecting style "Title", entering the title, then 
selecting "Text Body" and entering a paragraph creates the following 
automatic styles in "content.xml":

<office:automatic-styles>
<style:style style:name="P1" style:family="paragraph" 
style:parent-style-name="Text_20_body">
<style:text-properties officeooo:paragraph-rsid="00063317"/>
</style:style>
<style:style style:name="P2" style:family="paragraph" 
style:parent-style-name="Title">
<style:text-properties officeooo:paragraph-rsid="00063317"/>
</style:style>
<style:style style:name="T1" style:family="text">
<style:text-properties officeooo:rsid="00063317"/>
</style:style>
</office:automatic-styles>

and the actual content:

<office:body>
<office:text>
<text:p text:style-name="P2"><text:span text:style-name="T1">This is my 
title</text:span></text:p>
<text:p text:style-name="P1"><text:span text:style-name="T1">This is a 
text body paragraph.</text:span></text:p>
</office:text>
</office:body>

Now, I can delete the unwanted direct formatting by clicking "Format - 
Clear direct formatting". Then, the content looks as nice and clean:

<text:p text:style-name="Title">This is my title</text:p>
<text:p text:style-name="Text_20_body">This is a text body 
paragraph.</text:p>

However, this removal of unnecessary direct formatting is not very 
appropriate, as I sometimes do have direct formatting (a subscript for 
instance).
Is it possible to suppress Writer's behaviour of defining those 
meaningless automatic styles? And if not, is it possible to get rid of 
only the meaningless direct formatting, i.e. those <style:style> 
elements, that do not contain any formatting attributes?

I'm using LibreOffice Version 4.0.3.3.

Thanks for your help,
Holger



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