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.
Basic Examples (2)
The default value of $NumberMarks is Automatic:
MachinePrecision numbers are shown without a number mark:
Arbitrary-precision numbers are shown with a mark and the precision:
Temporarily force machine numbers to be shown with number marks: