IBM GC09-2830-00 - Manual (Page 176)

X'3F21' 856 11
X'3F22' 862 11
X'3F23' 916 11
X'3F24' 1255 11
Where CDRA String Types are defined:
String - Text - Numerical - Orientation - Shaping - Symmetrical
Type - Type - Shape - - - Swapping
---------+-------+------------+-------------+-----------+-------------
4 Visual Arabic LTR Shaped OFF
5 Implicit Arabic LTR Unshaped ON
6 Implicit Arabic RTL Unshaped ON
7(*) Visual Arabic Contextual(*) Unshaped-Lig OFF
8 Visual Arabic RTL Shaped OFF
9 Visual Passthru RTL Shaped ON
10 Implicit Contextual-L ON
11 Implicit Contextual-R ON
Note: Field orientation is left-to-right (LTR) when the first alphabetic
character is a Latin one, and right-to-left (RTL) when it is a
bidirectional (RTL) character. Characters are unshaped, but LamAlef
ligatures are kept, and not broken into constituents.
164 Quick Beginnings