That's a workaround for the binary files, which contains the keywords as plain text. Ok. But it is not really safe ... there is still a probability that the binary will be corrupt afterwards. And it doesn't work for all the other binary files, e.g. schematics, etc.
Anyway thanks for the idea. > If the text you type into the document will appear in the binary file in > plain text (as it seems to in Word files for example), then you can use > Subversion keywords as you would in any text file. Subversion has fixed-width > versions of its keywords that you would use in this case, to ensure that > expanding the keyword won't corrupt the file. So just type "$Rev:: $" or > "$Id:: $" in your document, and set svn:keywords on that > document to that key. Make sure you use double colons after the keyword name > so that you get the fixed-width versions, otherwise you will corrupt the file. See: http://svnbook.red-bean.com/nightly/en/svn.advanced.props.special.keywords.html