Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide

Using an alias

You can use any of the following supported aliases (in any mixture of lower and upper case):

Code page
Supported aliases
037
EBCDIC-CP-US, EBCDIC-CP-CA, EBCDIC-CP-WT, EBCDIC-CP-NL
500
EBCDIC-CP-BE, EBCDIC-CP-CH
813
ISO-8859-7, ISO_8859-7
819
ISO-8859-1, ISO_8859-1
920
ISO-8859-9, ISO_8859-9
1200
UTF-16
Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide