1/5     I want to split a PDF file by half, page by page, so that I can view
        one column per page instead of two.  It is entirely made up of tiff
        images, but I'd rather not convert it to tiff, slice tiff,and
        convert back, nor do I know how to do the first two.  Please help.
        Ok, tnx.
        \_ if you didnt make page breaks to start with you can add them
           in using Acrobat... or if you want to actually split it up,
           you can do that... with Acrobat.
        \_ suck it up and convert it to tiff.  If it's entirely made up of
           images in the first place, it's not as if it would be easy to
           have automated tools to do what you want.
           \_ Huh?  pdf has internal marks so it knows where page breaks are.
              wtf are you talking about?