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$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.
  • $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.
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