Thanks to John Ferrell, the drawings of the correctly performed hourglass and the incorrectly overlapped entry and exit can be found at: http://www.dixienc.us/Pappas_HOURGLASS.pdf -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20040730/c6c3a262/attachment.html