Character set containing only lowercase characters.
Character set containing both lowercase and numeric characters.
Character set containing both lowercase and uppercase characters.
Character set containing lowercase, uppercase, and numeric characters.
Character set containing both uppercase and numeric characters.
Character set containing neither lowercase, uppercase, nor numeric characters.
Character set containing only numeric characters.
Character set containing only uppercase characters.
Charset range constants that define different character sets for OCR. These constants represent various combinations of character types (lowercase, uppercase, numeric).