I've read the paper here http://support.sas.com/resources/papers/proceedings11/087-2011.pdf on how to create classes so that you can force PROC TABULATE to print columns and rows that have zero-totals.     The paper shows an example of setting up a class using this code:     DATA CLASS;      DO SVC=’A’,’F’,’N’,’M’;            DO PG=’E’,’O’;                      OUTPUT;            END; END; RUN; My question is: is it possible to have this class created dynamically using two single-column tables, one containing the possible values of SVC, the other containing the possible values of PG.  These two tables with values of SVC and PG could be generated at run time from the data using PROC SORT on the main data table to get a list of unique values of each variable.   I am working in an area where things change at a million miles an hour, and it would be nice if the tables produced in monthly reporting used classes that were automatically updated within the program at run-time, rather than having to be hard-coded each time there is a change.   Any help appreciated and thanks in advance.  I have googled to try and find a paper or anything on this, but so far no leads.   ... View more