[Libreoffice] Change cell border on many sheets?

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If this list is for developers then I need your expert help;

I upgraded from Oo 3.2 (I think that was the version) to the following
version of LibreOffice;

LibreOffice 3.4.3
OOO340m1 (Build:302)

A spreadsheet I work on had the cell borders set at 1 pt. in Oo. Now
with LibreOffice all of the cell borders on the sheet are .25 pt.  A
change was made to the cell border sizes and I didn't do it.

How do I quickly change ALL of the cell borders in the many sheets I'm
working on?  I have literally 1,000's of cells in around 90 sheets to
fix IF I have to
change each cell one at a time.

I need a way to change the cell border sizes that are set by LibreOffice
Calc by defualt and have them applied to all of the sheets I need changed.




 Man, do I need some help!

Thanks.


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