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By default the package "crop" adds not only crop marks to the pages of the document, but also a line with some information about the page/document, i.e. filename, date, time, pagenumber. I would like to customize this information, e.g. add a note to myself. Can I accomplish that without changing the package? If so, how?

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Newer versions of geometry provide cropmarks, you might want to check their customization possibilities, too (I haven't, so I don't know what is easy/possible there). – mbork Jul 31 '11 at 0:55
@mbork: I was not aware of that feature of geometry, thanks for pointing me to it! – Matthias Aug 1 '11 at 12:50
up vote 2 down vote accepted

You could redefine the internal macro \CROP@@info which prints that information. It's mentioned in the implementation section of the crop documentation.

More general and independent of the implementation: you could call the \cropdef command. Its first and optional argument is the macro which provides the page info (default: \CROP@@info). Four further arguments stand for macros for the corners. It's described in section 2.7 Defining your own marks in the crop manual.

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Thanks Stefan, first I was a bit afraid by the many things that happen in \CROP@@info which I don't fully understand, but in the end I found the place where to add my note. In fact I just copied the whole definition from crop.sty and added a line in between. – Matthias Aug 1 '11 at 12:49

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