Using Language Environment MSGFILE

Run-time messages are directed to a common Language Environment message file. You can use the MSGFILE run-time option to specify the ddname of this file. If a message file ddname is not declared, messages are written to the IBM-supplied default ddname SYSOUT.

Table 1 lists the SYSOUT definitions and MSGFILE default attributes for CMS:

Table 1. Operating System, SYSOUT Definitions, MSGFILE Default Attributes
Operating System	SYSOUT Definition	MSGFILE Default Attributes
CMS	FILEDEF SYSOUT TERMINAL	LRECL 121, BLKSIZE 121, RECFM FBA, NOCHANGE When output is directed to the terminal, ASA control characters are replaced by a single space.

When you direct run-time messages to an I/O device, the method you should use also depends on the operating system. Table 2 lists methods for directing run-time messages to an I/O device under CMS and provides references for additional information on this topic.

Table 2. Defining an I/O Device for a ddname
Operating System	Method to Define I/O Device	For additional information, see:
CMS	Use a FILEDEF statement to define a ddname for a file.	Using FILEDEF to Define Input and Output Files

Note: You can specify the same message file across nested enclaves.