Quote:
Originally Posted by HarryT
"ACS4" is "Adobe Content Server v4", which is the current release of Adobe's DRM server. That alone, though, is no help in knowing what the format is, since ACS4 can "serve up" both ePub and PDF files.
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I went back and searched around and finally found the 'ACS4' specification at the bottom of a page, so it's PDF, which is annoying. I wouldn't even have known what it was if someone hadn't mentioned that term.