How do I use a SAS data file with a format library? | SAS FAQ

Say that you have a version 9 SAS data file called auto.sas7bdat
and a version 9 format library for it called formats.sas7bcat on your
computer in c:\ . You would
like to use the formats when you display your data.  Here is an example
showing how you can use the formats stored in the format library.

libname in "c:\";
libname library "c:\";

PROC FREQ DATA=in.auto;
   TABLES foreign make;
RUN;

By including the libname library “c:\”; statement, SAS looks for the format library in
that location and can access the formats stored in it.