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

is an option for character selections that specifies the language used when checking the spelling of a word in a human natural language selection.


  • Human natural language selections are those that have LanguageCategory->"NaturalLanguage".
  • With the default setting DefaultNaturalLanguage->"Language", the language is taken to be the current setting of $Language.
  • The language can also be specified explicitly as a string, for example, by setting to , , or .
  • This option is typically set at the global level, but it can also be set at the level of an individual notebook, cell, or selection.
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