My company used to write pen plotter drivers for the Mac, we still sell the odd one. We used to get loads of pen plotters loaned to us by the manufacturers, and we hung on to the manuals when we could (which we usually managed). So I still have quite a library of data on the command sets for the ones made from the early 80s onward. If anyone wants any details I can probably help somehow, just have to be sure I'm not going to be sued for copyright infringement. As for actual plotters (not my personal property though, just 44% mine): HP DraftMaster MX Plus, HP 7475A Graphtec MP3200 What I would like to get my hands on is an HP 7550 in the UK. I saw one last week on eBay in the US but shipping would be too expensive. Roger Holmes. (Technical Director and 44% shareholding of Microspot Ltd)