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X Table 2. Rules for Forming User-Defined Words from Multi-Byte Characters |
X Rule |
X OS/390 and VM |
X AIX, OS/2, and Windows |
X Use of
X Shift-Out
X Shift-In
X Characters |
X DBCS user-defined words
X begin with a shift-out
X character and end with a
X shift-in character. |
X Not required
X
X
X |
X Value Range
X
X
X |
X DBCS user-defined words can
X contain characters whose
X values range from X'41' to
X X'FE' for both bytes. |
X Valid value ranges for
X multi-byte characters
X depend on the specific code
X page being used. |
X Containing
X Characters
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X |
X DBCS user-defined words can
X contain only double-byte
X characters, and must contain
X at least one non-EBCDIC
X character. (Double-byte
X EBCDIC characters are
X represented by X'42' in the
X first byte.) Single-byte
X characters are not allowed
X in a DBCS word.
X DBCS user-defined words can
X contain both double-byte
X EBCDIC and double-byte non
X EBCDIC characters. The only
X double-byte EBCDIC
X characters allowed are: A -
X Z, a - z, 0 - 9, and the
X hyphen (-). The hyphen
X cannot appear as the first
X or last character. |
X A user-defined word can
X consist of both single-byte
X or multiple-byte (including
X double-byte) characters.
X If a character exists in
X both single-byte and
X multiple-byte forms, its
X single-byte and multi-byte
X representations are not
X equivalent.
X
X
X
X
X
X
X
X
X
X |
X Continuation
X Rules |
X Words cannot be continued
X across lines. |
X Words cannot be continued
X across lines. |
X Uppercase /
X Lowercase
X Letters |
X Equivalent
X
X |
X Not equivalent
X
X |
X Maximum
X Length
X
X
X
X
X
X
X |
X 14 characters
X
X
X
X
X
X
X
X |
X 15 characters for a DBCS
X code page
X For AIX only:
X ° 7 characters for EUC
X code page IBM_eucTW
X ° 10 characters for EUC
X code pages, IBM_eucJP,
X IBM_eucKR, and
X IBM_eucCN |
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