Name of dtSearch alphabet file to use when parsing text into words.

public String AlphabetFile;

Public Property AlphabetFile() As String

The alphabet file determines which characters are letters and what the rules are for handling capitalization and punctuation. If blank, a default alphabet will be created based on information supplied by Windows  

The alphabet file only controls the indexing of characters in the range 32-127. Unicode character properties control the treatment of other characters.