BUILT-IN MATHEMATICA SYMBOL

FractionLine

This function has not been fully integrated into the long-term Mathematica system, and is subject to change.

FractionLine
is an option for fractions that specifies the thickness of the line separating the numerator and denominator.

Details Details

A fraction can be created using Ctrl+/ or Insert ► Typesetting ► Fraction menu item.
With the default setting FractionLine->Automatic, the fraction line has a thickness equal to the default thickness of a line in that font. This is the thickness, for example, of lines in the hyphen (-) and underscore (_) characters.
With the setting FractionLine->None, the fraction line has zero thickness; in other words, it is invisible.
With the setting FractionLine->k, the fraction line has a thickness k times the default value.
For a selected fraction, FractionLine is set as an option of the FractionBox object, and applies only to the selection.

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