/* (specification)
"CORRELATIONS" (cor_):
*variables=custom;
- +missing=miss:!pairwise/listwise,
- inc:include/exclude;
+ missing=miss:!pairwise/listwise,
+ inc:include/exclude;
+print=tail:!twotail/onetail,
sig:!sig/nosig;
+format=fmt:!matrix/serial;