proc and data are implicit step boundaries. ; after datalines, the four ;;;; a datalines4 and the last line in a batch or nontinteractive session. data tq84_ds;
x = 'eggs';
y = 'why';
proc /* Implicit step boundary: dataset tq84_ds
will be created */
print data=tq84_ds;
run; /* Explicit step boundary: tq84_ds will
be printed; */