This property sets up additional letter sets for the text language. Every base language included in the collection of base languages of the text language provides its own letter sets. Each word in the text is recognized using one or several base languages, and thus their letter sets are applied to this word. This property specifies the number of letter sets that are applied to every recognized word irrespectively of the base language assigned to it.
Type[in] A variable of the TextLanguageLetterSetEnum type that describes the type of the letter set that you want to get or set.Result[out] A pointer to BSTR variable that receives the value of this property. Must not be NULL.Value[in] A variable of type BSTR that contains the new value for the property.
See the description of TextLanguageLetterSetEnum type for the list of available types of letters sets for the text language. By default, letter sets of each type are empty.