From: Alexander Peshkov (email@example.com)
Date: Wed Mar 24 2004 - 05:23:38 PST
Those differences can appear due to the new functionality, improved
formatting algorithms or rounding precision. We do not guarantee any
kind of stability for coordinates in the AT format, this format is not
supposed to be used for document versioning control. Therefor you have
to either restrain from XEP upgrades or use different means for
Alexander Peshkov mailto:firstname.lastname@example.org
MB> We compared the AT files produced from the same FO file using different versions of XEP, and found differences in the positioning and width of elements. For example:
MB> xep363: <xep:text value="Copyright " x="332218" y="46987" width="36456"/>
MB> xep372: <xep:text value="Copyright " x="332386" y="46989" width="36440"/>
MB> In some cases, the differences in "y" value can amount to 10000. The difference in width is probably the cause of the positioning differences. Perhaps you changed the algorithm to compute the
MB> characters' size?
MB> Of course, we are using the same fonts.xml file, on the same computer, to compare results.
MB> Is there a way to avoid these differences? We need to find which pages have changed between 2 versions of a document, and we are using the AT format to spot any difference. But in this case, the
MB> differences on the page are due to XEP, not to any change in content.
MB> Benoit Maisonny
MB> Benoit MAISONNY email@example.com
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