MathGroup Archive 1997

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What is the funny-looking "i" in the palette?


Now that I've found the palette, I wonder what some of the symbols in
it mean.  Since there is vanishingly small info on the notebook
interface (in 3.0), I spent quite a bit of time looking thru the help
files and the book but found no clues what this funny i is (it has two
vertical bars, not one plus a dot).

At first, I thought it meant Root[-1] but only capital I works for
that, I tried it.

Any clues would be appreciated.


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