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Jan 17, 2011 at 17:04 comment added mctylr Ref: drawright.com/theory.htm (what R-mode and L-mode is)
Jan 17, 2011 at 16:15 history made wiki Post Made Community Wiki
Jan 11, 2011 at 19:26 comment added Brad Cupit Pragmatic Thinking and Learning was excellent
Jan 11, 2011 at 14:34 history edited Gary CC BY-SA 2.5
added 27 characters in body
Jan 11, 2011 at 13:26 history answered Gary CC BY-SA 2.5