--- /dev/null
+/* -*- c -*- */
+
+/* Summary functions for all variables. */
+S(CTSF_COUNT, "COUNT", CTFT_UECELL, CTF_COUNT, CTFA_ALL)
+S(CTSF_areaPCT_COUNT, "PCT.COUNT", CTFT_AREA, CTF_PERCENT, CTFA_ALL)
+S(CTSF_areaPCT_VALIDN, "PCT.VALIDN", CTFT_AREA, CTF_PERCENT, CTFA_ALL)
+S(CTSF_areaPCT_TOTALN, "PCT.TOTALN", CTFT_AREA, CTF_PERCENT, CTFA_ALL)
+
+/* Scale variables, totals, and subtotals. */
+S(CTSF_MAXIMUM, "MAXIMUM", CTFT_CELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_MEAN, "MEAN", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_MEDIAN, "MEDIAN", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_MINIMUM, "MINIMUM", CTFT_CELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_MISSING, "MISSING", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_MODE, "MODE", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_PTILE, "PTILE", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_RANGE, "RANGE", CTFT_CELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_SEMEAN, "SEMEAN", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_STDDEV, "STDDEV", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_SUM, "SUM", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_TOTALN, "TOTALN", CTFT_UECELL, CTF_COUNT, CTFA_SCALE)
+S(CTSF_VALIDN, "VALIDN", CTFT_UECELL, CTF_COUNT, CTFA_SCALE)
+S(CTSF_VARIANCE, "VARIANCE", CTFT_UCELL, CTF_GENERAL, CTFA_SCALE)
+S(CTSF_areaPCT_SUM, "PCT.SUM", CTFT_AREA, CTF_PERCENT, CTFA_SCALE)
+
+/* Debugging and troubleshooting. */
+S(CTSF_areaID, "ID", CTFT_AREA, CTF_COUNT, CTFA_ALL)