The Properties section is optional, and follows the Encodings section.
If a Properties section is supplied, an Encodings section must be supplied also.
The Properties section lists values for the first-byte of each character that represent alphabetic characters, digits, or spaces.
The Shift-JIS Properties section is as follows:
Properties: space: [\x09-\x0d,\x20] digit: [\x30-\x39] alpha: [\x41-\x5a,\x61-\x7a,\x81-\x9f,\xe0-\xef]
This indicates that characters with first bytes \x09 to \x0d, as well as \x20, are to be treated as space characters, digits are found in the range \x30 to \x39 inclusive, and alphabetic characters in the four ranges \x41-\x5a, \x61-\x7a, \x81-\x9f, and \xe0-\xef.
