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What is a good way to show changes between two versions

I done a bunch of updates in an article. I have a copy of an old revision of the paper. Now I would like to generate a PDF/DVI illustrating the updates I've done.

Is there any tool or package that would help me with this?

(The article is under SVN version control, if that helps.)


There is a useful Perl script to display differences between two LaTeX files: it creates a new LaTeX file that, when compiled, highlights changes with different colors. It is called latexdiff and also works with version control files.


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