We've thought about creating pdf archives for recording drawing revision history where each revision would be merged as another page to the pdf file. We don't have a copy of Acrobat and never realized until looking at pricing that they don't seem to offer a network version, but require a separate purchase for each computer. Buying one or two copies is do-able, but we'd really need five and that's a little steep for this economy (especially the large-format Pro version). I know there are many other programs available besides Acrobat 6, but I can't find much information about the most important function (to us): merging one pdf file into another existing pdf file. Plus, I'm a little leery about the full functionality of non-Acrobat programs (and their output) if we ever try to use other features such as digital signing for drawing approvals. I'm hoping to find out about how others have approached this use of pdf files and what problems they ran into - especially using non-Adobe solutions - such as large format (C, D, E-size) drawings, line weights, colors, etc.
