Because of the relationship between some SAS system options, SAS might modify an option's value. This modification might change your results.
To determine how an option was set, enter the following code in the SAS Program Editor:
proc options option=option value; run;
After you submit this code, the SAS log will explain how the option was set. For example, the following output is displayed when you enter
proc options option=CATCACHE value; run;
Option Value Information for SAS Option CATCACHE Option Value: 0 Option Scope: Default How option value was set: Shipped Default
Options that are set by SAS will often say "Internal" in the How option value was set field. Some SAS options are only internal. You cannot specify an internal option as the option= value in the preceding code. If you do, SAS will return an error stating an unrecognized option value.