SAS 9.1.3 Language Reference: Concepts, Third Edition, Volumes 1 and 2
K
KEEP statement
I/O optimization and 216
keeping variables 88
examples 90
input or output data sets for 88
order of application 89
statements vs. data set options 88
KEY= option
error checking and 432
MODIFY statement 534
SET statement 534
key variables 520, 525
keys
registry and 237
Keys window 304