To learn about SAS software related to the content of this lesson, see the following documentation:

• SAS Language Reference: Concepts, SAS Language Reference: Dictionary, and SAS documentation for your operating environment (see the sections on librefs and engines).
  
  
• SAS Language Reference: Dictionary (see the section on the LIBNAME statement and SAS system options).
  
  
• To search for more information on the content of this lesson, click Help SAS System Help from any SAS window.