You can restrict them to LOADING the documents only once, by feeding all views through a script and keeping a database of which users have viewed which documents, but you can't restrict them to USING the documents only once. To do something like that, you need to track which numbers have been used already, which means adding tracking to the package delivery service end of things.

In reply to Re: Print HTML-documents just once by TedPride
in thread Print HTML-documents just once by cmuebro

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