AutoCAD has an option to create a "wipeout" feature that you can place behind text to hide the drawing behind it. When creating PDFs from AutoCAD, it looks perfect while viewed as a digital copy. However, when end users (not the PDF creators) try to print these onto hardcopy FROM ACROBAT, the wipeout areas appear shaded, hatched, or solid black. This is not an issue with AutoCAD, as they print out correctly from the source. It is a compatibility issue that needs to be a collaborative effort between Autodesk and Adobe. This has actually been a problem for years, and has never been fixed. Please contact Autodesk to collaborate with them on a permanent solution, as workarounds are not an option for the hundreds of unknown end users that may want to print something out after we submit it in PDF format.