=> R0 = territory number, or -1 for current
R1 = code for required character property table
<= R0 = pointer to character property table
A character property table is a 256 bit table indicating whether or not each
character in the given territory's alphabet has a particular property.
Code Meaning when set
0 Control code
1 Uppercase
2 Lowercase
3 Alphabetic
4 Punctuation
5 White space
6 Digit
7 Hex digit
8 Accent
9 Flows in same direction as territory write direction
10 Flows in reverse direction
See PRM 3, page 826.
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