My company is starting to get deep into large-format printing. After scouring the internet, I have yet to find a straightforward answer to this question: How does one circumvent the page size limit of 200 inches x 200 inches for PDFs? Although it is possible to scale up PDFs upon output on our in-house equipment, some third-party service providers require artwork to be uploaded at 100% of the desired output size. Some sources indicate that there is a way to expand the maximum page size to "millions" of inches by changing the "UserUnit" value in the PDF. Have any of you successfully done so, and if so, how did you do it?

After a long and arduous screening process, the company I work for has been approved to bid on the production of prescription pads for the State of New Jersey. Among the numerous security features required on these pads is the a "VOID" pantograph. The state provides approved bidders with source files containing the desired pattern, but it does NOT include the screens necessary to actually output the pads properly, nor does the state provide exact specifications for the screens to be used to produce the pattern. Although I had never composed any documents with a pantograph before, I was confident I could create it without much difficulty. However, after many trials with many combinations of screens run on our offset press, none have produced the "copy-evident" effect we were expecting. At this point, I'm beginning to think that this particular feature doesn't actually work regardless of how carefully it's created. Have any of you seen solid evidence that the "VOID" pattern used in New Jersey prescription pads actually become visible when photocopied, or am I wasting my time struggling with this problem?