This may be a good place to mention a text I began writing some while ago: On Scanning. http://everist.org/temp/__On_scanning.htm Meant to be a 'how to' about scanning and post-processing techniques, written as I explored that myself. It's not finished because I was working on a solution to the 'screened images with overlaid sharp text' post-processing problem, when sidetracked. As often happens with me. Also that project diverged into the whole text encoding thing. Which I can't discuss, but I *can* discuss scanning issues. Anyway, any comments, corrections and suggestions for extra material are welcome. Oh, and those with an interest in Apple history may find this amusing: http://everist.org/NobLog/20181001_missing_wave.htm Guy