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subkeyword 120
subroutine
comparison to a function 57, 70
description 57
protecting variable 62
writing 58
subsidiary list 142, 155
SUBSTR 192
substring 192
suggested readings xix
symbols and strings in DBCS 396
SYNONYM command 254
syntax 387
rules of REXX 6
SYNTAX condition of SIGNAL instruction 226, 228
SYSSBA command 201
system libraries 422
systems administrator 421
T
tail 122
template 75
parsing 75
templates containing positional patterns 206
temporary command destination change 132
temporary storage queue (TSQ) 344
ten, powers of 223
TERMID command 129, 374
terms and data 115
text editor 231
text spacing 191
tips, tracing 168
TO phrase of DO instruction 138
TOP command 254
trace
trace operation 29
Trace End (TE) immediate command 411
TRACE instruction 85, 127
Trace Start (TS) immediate command 411
traceback, on syntax error 169
tracing results 30
tracing tips 168
transaction identifier 231, 421
TRUNC command 254
truncating numbers 195
type of data checking with DATATYPE 180
typing in a program 11
U
unassigning variables 142
unconditionally leaving your program 143
underflow, arithmetic 224
uninitialized variable 121
UNTIL phrase of DO instruction 138
unusual change in flow of control 225
UP command 255
Update CICS Initialization JCL 432
Update CICSTART.PROC 432
Update LSRPOOL Definitions 431
Usa option of DATE function 182
user's guide 3, 99
USERS directory 257, 273
users, identifying 196
using a period as a placeholder 75
V
value of variable, getting with VALUE 196
VALUE option of PARSE instruction 153
VAR option of PARSE instruction 153
VARDROP command 278
VARGET command 278
variable
definition 19
description 19
names 19
type of value 20
value 20
variable string pattern in parsing 76
VARPUT command 279
verbs
DEFINE 296
PANEL 299
Verify the Installation 434
verifying contents of a string 197
VERSION option of PARSE instruction 154
W
WAITREAD command 375
WAITREQ command 282, 291, 376
warning, STORAGE function 201
Weekday option of DATE function 182
what this book is about xix
where to find more information 438
WHILE phrase of DO instruction 138
who this book is for xix
word from a string 197
WRITE command 273, 279
writing
REXX programs 5
X
XOR, logical 118
XORing character strings together 177
Y
you should know xix
Index 453