IBM TSO/E REXX User Manual page 7

Chapter 7. Manipulating Data . . . . . . . . . . . . . . . . . . . 85
Using Compound Variables and Stems . . . . . . . . . . . . . . . . 85
Parsing Data. . . . . . . . . . . . . . . . . . . . . . . . . . 87
Part 2. Using REXX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Chapter 8. Entering Commands from an Exec . . . . . . . . . . . . 97
Types of Commands . . . . . . . . . . . . . . . . . . . . . . . 97
Issuing TSO/E Commands from an Exec . . . . . . . . . . . . . . . 98
Issuing Other Types of Commands from an Exec . . . . . . . . . . . . 101
Chapter 9. Diagnosing Problems Within an Exec . . . . . . . . . . . 111
Debugging Execs
Chapter 10. Using TSO/E External Functions . . . . . . . . . . . . 119
TSO/E External Functions . . . . . . . . . . . . . . . . . . . . 119
Additional Examples . . . . . . . . . . . . . . . . . . . . . . 130
Function Packages . . . . . . . . . . . . . . . . . . . . . . . 133
Chapter 11. Storing Information in the Data Stack . . . . . . . . . . 135
What is a Data Stack?
Manipulating the Data Stack . . . . . . . . . . . . . . . . . . . 136
Processing of the Data Stack . . . . . . . . . . . . . . . . . . . 139
Using the Data Stack . . . . . . . . . . . . . . . . . . . . . . 140
What is a Compound Variable? . . . . . . . . . . . . . . . . . . 85
Using Stems . . . . . . . . . . . . . . . . . . . . . . . . . 86
Instructions that Parse . . . . . . . . . . . . . . . . . . . . . 88
Ways of Parsing . . . . . . . . . . . . . . . . . . . . . . . 89
Parsing Multiple Strings as Arguments . . . . . . . . . . . . . . . 92
Using Quotations Marks in Commands . . . . . . . . . . . . . . . 98
Using Variables in Commands . . . . . . . . . . . . . . . . . . 99
Causing Interactive Commands to Prompt the User . . . . . . . . . . 100
Invoking Another Exec as a Command. . . . . . . . . . . . . . . 100
What is a Host Command Environment? . . . . . . . . . . . . . . 101
Changing the Host Command Environment . . . . . . . . . . . . . 106
. . . . . . . . . . . . . . . . . . . . . . . 111
Tracing Commands with the TRACE Instruction . . . . . . . . . . . 111
Using REXX Special Variables RC and SIGL . . . . . . . . . . . . 112
Tracing with the Interactive Debug Facility . . . . . . . . . . . . . 113
Using the GETMSG Function . . . . . . . . . . . . . . . . . . 120
Using the LISTDSI Function
Using the MSG Function . . . . . . . . . . . . . . . . . . . . 122
Using the MVSVAR Function . . . . . . . . . . . . . . . . . . 123
Using the OUTTRAP Function . . . . . . . . . . . . . . . . . . 123
Using the PROMPT Function . . . . . . . . . . . . . . . . . . 124
Using the SETLANG Function . . . . . . . . . . . . . . . . . . 125
Using the STORAGE Function. . . . . . . . . . . . . . . . . . 126
Using the SYSCPUS Function . . . . . . . . . . . . . . . . . . 126
Using the SYSDSN Function . . . . . . . . . . . . . . . . . . 126
Using the SYSVAR Function . . . . . . . . . . . . . . . . . . 127
Search Order for Functions . . . . . . . . . . . . . . . . . . . 134
. . . . . . . . . . . . . . . . . . . . . 135
Adding Elements to the Data Stack . . . . . . . . . . . . . . . . 136
Removing Elements from the Stack . . . . . . . . . . . . . . . . 137
Determining the Number of Elements on the Stack . . . . . . . . . . 137
Passing Information Between a Routine and the Main Exec . . . . . . . 140
Passing Information to Interactive Commands . . . . . . . . . . . . 142
Issuing Subcommands of TSO/E Commands . . . . . . . . . . . . 142
. . . . . . . . . . . . . . . . . . 120
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