SAS automatically defines three librefs:
contains a group of
catalogs that contain information that is used to control various
aspects of your SAS session. The Sashelp library is in the
!SASROOT directory. See
The !SASROOT Directory.
contains SAS catalogs
that enable you to tailor features of SAS (such as window size, font
settings, and printer entries) for your needs. If the defaults in
the Sashelp library are not suitable for your applications, you can
modify them and store your personalized defaults in your Sasuser library.
is the temporary, or
scratch, library automatically defined by SAS at the beginning of
each SAS session or job. The Work library stores two types of temporary
files: those files that you create, and those files that are created
internally by SAS as part of normal processing.
These librefs and the
library libref are reserved librefs. If your site also has
SAS/GRAPH software, the maps libref
might be automatically defined. All of these libraries are described
in “Permanent and Temporary Libraries” in
SAS Language Reference: Concepts. Sasuser and Work have operating system dependencies.