dnl - Definition of columns/rows when labels are rotated from one axis to another.
dnl - Preprocessing to distinguish categorical from scale.
dnl - PCOMPUTE:
-dnl * multi-dimensional (multiple CCT_POSTCOMPUTE in one cell)
dnl * dates
dnl
dnl Features not yet tested:
dnl * PCOMPUTE for more than one kind of summary (e.g. [COUNT, ROWPCT]).
dnl * MISSING, OTHERNM
dnl * strings and string ranges
+dnl * multi-dimensional (multiple CCT_POSTCOMPUTE in one cell)
dnl - PPROPERTIES:
dnl * )LABEL[N].
dnl - Summary functions: