The LABEL statement associates a label with the variable Icebox for
the duration of the PROC TIMEPLOT step. PROC TIMEPLOT uses the label as the
column header in the listing. The TITLE statements specify titles.
label icebox='Refrigerators';
title 'Weekly Sales of Stoves and Refrigerators';
title2 'for the';
title3 'First Six Weeks of the Year';
run;