Delete single format from library

proc catalog catalog=library.formats;
        delete yn.format dnk.formatc;
quit;

*** yn is numeric format, dnk is character format;

Copy a permanent format library

proc catalog catalog=libA.formats;
        copy out=libB.formats;
run;

Creating a Stored Macro Facility

options mstored sasmstore=macro;
libname macro '/home/dltmp/maclib';

%macro test / store des='This is my program';
         %let x=1;
%mend;

%copy test/source;

proc catalog cat=macro.sasmacr;
        contents;
run;

Link: http://www2.sas.com/proceedings/forum2008/101-2008.pdf