A directory listing is a list of files in a SAS library.
Each file is called a member, and each member has a member type that
is assigned to it by SAS. The member type indicates the type of SAS
file, such as DATA or CATALOG. When SAS processes statements, SAS
not only looks for the specified file, it verifies that the file has
a member type that can be processed by the statement.
The directory listing
contains two main parts:
list of library members and their