Comment: It is a comfort to know.

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In reply to comment: It took research to figure (see in situ)

It is a comfort to know.

Research can confirm the intuitively obvious.

Thank you for the postcard.

Disclaimer: Mark Twain (1835-1910-To be continued) is unlicensed. His river pilot's license went delinquent in 1862. Caution advised. Daily Paul