While attempting to learn how DXSpider filters work, I found that I had to glean
+bits and pieces of information from the DXSpider User Manual and Administrators
+Guide as well as various posted messages, help files and the program and
+data-base files themselves. Therefore, this is by no means an original work. I
+have used and in some cases copied from some of these sources. What I have tried
+to accomplish is to gather this scattered information, put it in one spot
+(please pardon the pun) so others might benefit. I would advise those with
+interest to go back and read these other sources at their leisure.