Understanding word-delimiter attributes

The keywords BEFORE_DIGIT, IGNORE, and USE_IT, which appear in , are word-delimiter attributes. Each word-delimiter attribute describes a word-break role played by a code page element. The complete set of word-delimiter attributes appears in the following table.

Table 4. Word-delimiter attributes
Word delimiter attribute	Description	Default
BEFORE_DIGIT	Treated as part of a word only if followed by a character with the DIGIT attribute	Assigned to the following characters: Period (.) Comma (,) Hyphen (-) For example, "12.34" is one word, but "ab.cd" is two words.
BEFORE_LET_DIG	Treated as part of a word only if followed by a character with the LETTER or DIGIT attribute	-
BEFORE_LETTER	Part of a word only if followed by a character with the LETTER attribute, otherwise treated as a word delimiter.	-
DIGIT	Always part of a word	Assigned to the characters 0-9.
IGNORE	Ignored	Assigned to the apostrophe (').For example, "John's" is equivalent to "Johns."
LETTER	Always part of a word	Assigned to all characters that the current attribute table defines as alphabetic. In English, these are the uppercase characters A-Z and the lowercase characters a-z.
TERMINATOR	Word delimiter	Assigned to all other characters.
USE_IT	Always part of a word	Assigned to the following characters: Dollar sign ($) Percent sign (%) Number sign (#) At symbol (@) Underline (_)