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MathGroup Archive 2005

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"gray" lines in grids?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61918] "gray" lines in grids?
  • From: "Steven T. Hatton" <hattons at globalsymmetry.com>
  • Date: Fri, 4 Nov 2005 05:11:47 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

If I set the form in the following to "Text", the lines are either shown, or
not.

Cell[BoxData[
    FormBox[GridBox[{
          {"P", "Q", "¬", "(", "P", "\[Or]", "¬", "Q", ")"},
          {"F", "F", "F", "T", "F", "T", "T", "F", "\[InvisibleSpace]"},
          {"F", "T", "T", "F", "F", "F", "F", "T", "\[InvisibleSpace]"},
          {"T", "F", "F", "T", "T", "T", "T", "F", "\[InvisibleSpace]"},
          {"T", "T", "F", "T", "T", "T", "F", "T", "\[InvisibleSpace]"}
          },
        RowLines->{True, False},
        ColumnLines->{False, True, 0.5}],
        TraditionalForm]], "Input"]

This started out as a paste from MathML using something similar to:
\<mtable rowlines="solid dashed dashed" columnlines="dashed dashed solid">

I've discovered that I can change the appearance of grid lines in TextForm
if I use integer values.  However, when I paste that back into Emacs as
MathML, lines are either "none" or "solid".  Are these just limitations of
Mathematica and MathML I have to work around, or is there a "real"
solution?

And, BTW, why the heck are the parentheses purple in text form?
-- 
"Philosophy is written in this grand book, The Universe. ... But the book
cannot be understood unless one first learns to comprehend the language...
in which it is written. It is written in the language of mathematics, ...;
without which wanders about in a dark labyrinth."   The Lion of Gaul


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