Enter probabilities 1-X-2
P1 %	PX %	P2 %
OR Enter 1-X-2 line
1	X	2
Enter probabilities 1X-12-2X
P1X %	P12 %	P2X %
OR Enter 1X-12-2X line
1X	12	2X
Margin: %

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You need only to enter margin
and two any values in any row.
Probabilities are entered as percents.
Fractional values - using dots.
If you enter all the coefficients
(either 1-X-2, or 1X-12-2X),
then margin is calculated.