Double and Quadruple Vertical Separator Lines in Pre-Cal Numerical Tables

[tpainter]

Hi,

What's the meaning of the double and quadruple vertical separator lines in these pre-cal tables? The textbook gives no explanation.

I included a pdf with just a few examples.

Thanks!

Twyla

 

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[kdejute]

Hmmm ... I do not see the significance of the lines you describe. Perhaps the publisher’s website includes an “About the Book” section or other commentary that might shed light on this design.

If the lines aren’t mentioned, and you don’t find a pattern of which tables have which lines, I would be tempted to ignore them.

–Kyle

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