4.1.6 CLASS Clause
X >_Workstation_> Under AIX, OS/2, and Windows, you cannot specify the CLASS
X clause if the code page in effect is a DBCS or EUC code page.
CLASS class-name-1 IS
Provides a means for relating a name to the specified set of
characters listed in that clause. Class-name can be referenced only
in a class condition. The characters specified by the values of the
literals in this clause define the exclusive set of characters of
which this class-name consists.
X >_Host_> Under OS/390 and VM, the class-name in the CLASS clause can
X be a DBCS user-defined word. <_Host_<
If numeric, must be unsigned integers and must have a value that is
greater than or equal to 1 and less than or equal to the number of
characters in the alphabet specified. Each number corresponds to the
ordinal position of each character in the EBCDIC or ASCII collating
X series. Cannot be specified as floating-point literals or as DBCS
If nonnumeric, the literal is the actual EBCDIC or ASCII character.
Literal-4 and literal-5 must not specify a symbolic-character
figurative constant. If the value of the nonnumeric literal contains
multiple characters, each character in the literal is included in the
set of characters identified by class-name.
If the nonnumeric literal is associated with a THROUGH phrase, it must
be one character in length.
THROUGH and THRU are equivalent. If THROUGH is specified,
class-name includes those characters beginning with the value of
literal-4 and ending with the value of literal-5. In addition,
the characters specified by a THROUGH phrase can specify
characters in either ascending or descending order.
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