Write to terminal service

Table 1. Write a message to the terminal or to SYSTERM
Field	Contents
Request type	4 (write to terminal)
Number of argument words: 1	Word 1 Address of the 2-byte message length, followed by a message string of at most 120 characters. Word 2 Target of the message 1 Write to terminal 2 Write to SYSTERM data set if available, to terminal otherwise
Number of returned-value words: 0
Return code	0 Request satisfied 4 Request failed