$NumberMarks

$NumberMarks gives the default value for the option NumberMarks, which specifies whether ` marks should be included in the input form representations of approximate numbers.

The default setting for $NumberMarks is Automatic.

$NumberMarks = True indicates that ` should by default be used in all approximate numbers, both machine-precision and arbitrary-precision ones.

$NumberMarks = Automatic indicates that ` should by default be used in arbitrary-precision but not machine-precision numbers.

$NumberMarks = False indicates that ` should by default never be used in outputting numbers.

See Section 3.1.4.

See also: NumberForm, SetPrecision.

New in Version 3.