In my particular case, I get a large collection of pdf documentation from another company. *Some*
of it is randomly copy-prohibited, for no discernible reason. Sometimes I request that they
regenerate the affected PDFs without the prohibitions, but it takes a while for that to be done,
because it's of course not a priority. It'd be a lot easier to just run the pdfs through an automated
user-prohibition-remover program...if one existed.