The SYSPREF= option
specifies a prefix to be used in constructing a fully qualified physical
filename from a partially qualified name. Wherever a physical name
must be entered in quotation marks in SAS statements or in SAS windowing
environment commands, you can enter a data set name in the form '.
rest-of-name',
and SAS inserts the value of the SYSPREF= option in front of the first
period.
Unlike the user profile
prefix, the SYSPREF= option can have more than one qualifier in its
name. If, for example, SYSPREF=SAS.TEST, then '.SASDATA' is interpreted
as 'SAS.TEST.SASDATA'. The maximum length of
prefix is
42 characters.
If no value is specified
for SYSPREF=, then SAS uses the user profile prefix (in the interactive
environment) or the user ID (in batch).