IBM® supplies sets of equate (EQU) statements for
use with some callable services. These statements, which you may optionally
include in your source code, provide constants for use in your program. IBM provides
the statements as a programming convenience to save you the trouble
of coding the definitions yourself.
Note: Check the “Programming Requirements” section
of the individual service description to determine if the equate statements
are available for the callable service you are using. If the equate
statements are available, that section will also provide a list of
the statements that are provided, along with a description of how
to include them in your program.