The only link I could find was an archive link https://archive.org/details/pdf1.7 https://archive.org/details/pdf1.7 The open PDF standard now costs 250 USD. A

The only link I could find was an archive link https://archive.org/details/pdf1.7 https://archive.org/details/pdf1.7 The open PDF standard now costs 250 USD. Adobe is supposed to have an archive of the 1.7 spec online but they do not care enough to keep that up it appears. I am trying to think of a reason why they would do such a blindly dumb thing but the C++ people used to do the same thing.