| SAS Companion for the OS/390 Environment |
The INFILE/FILE
User Exit Facility provides an interface for accessing user exit modules during
the processing of external files in a SAS DATA step. A user exit module (or
user exit) consists of several functions that you write in order to perform
special processing on external files. For example, you can write user exits
that inspect, modify, delete, or insert records. Here are some more specific
examples of how user exits may be used:
- encrypting and decrypting data
- compressing and decompressing
data
- translating data from one character-encoding system
to another.
If a user exit is active, SAS invokes it at various
points during the processing of an external file.
Copyright 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
