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[an error occurred while processing this directive] $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 the Mathematica book: Section 3.1.4.
  • See also: NumberForm, SetPrecision.