After you have coded your
user exit module, you must assemble or compile it and then link it
into a load library. The name that you choose for your load module
must consist of a four-character prefix, followed by the letters IFUE.
Do not use a prefix that is the same as the name of a FILE or INFILE
statement option.
After your load module
is built, use the LOAD parameter of the SAS CLIST, SASRX exec, or
cataloged procedure when you invoke SAS. It will specify to SAS the
name of the load library that contains your user exit module.