which operating environment you are using, to access a SAS library,
you must tell SAS where it is. You can do this in the following ways:
directly specify the operating
environment's physical name for the location of the SAS library.
The physical name must conform to the naming conventions of your operating
environment, and it must be enclosed in quotation marks. For example,
in the SAS windowing environment, the following DATA statement creates
a data set named MYFILE:
data 'c:\my documents\sasfiles\myfile';
assign a SAS libref
(library reference), which is a SAS name that is temporarily
associated with the physical location name of the SAS library.