overscan (PaulMM) Administrator Staff member Joined 27 December 2005 Messages 16,495 Reaction score 19,294 5 January 2013 #1 Source: http://home.comcast.net/~wmiipms/NewsLetters/1993/WMIIPMS_11-1993_NL.pdf Attachments CL-518-text.png 185.8 KB · Views: 274 CL-518-drawing1.png 158.3 KB · Views: 249 CL-518-drawing2.png 128.5 KB · Views: 202