One of the most useful aspects of macro programming is the ability to reuse your macro programs. In Creating and Using Macro Programs, you learned that compiled macros are stored in a temporary SAS catalog by default and are available for execution anytime during the current SAS session. You also learned that macros stored in this temporary SAS catalog are deleted at the end of the SAS session.

You might want to store your macros permanently so that you can reuse them in later SAS sessions or share them with others. There are several ways of storing your macro programs permanently and of making them accessible during a SAS session. The methods that you learn in this chapter are