diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md

@@ -72,9 +72,24 @@ the next and previous row by an f-stop fraction.  `--stops` and
 
 `$ fstop-print-calc 16 --stops 3 --csv --table-stops 3 --table-fraction 3`
 
+Instead of exporting the CSV as explicit values, you can export it as
+cell formulas instead with `--formulas`.  This produces a spreadsheet
+with the centermost-cell as the base time, which can be changed at
+will and all other cells will update accordingly.
+
+`$ fstop-print-calc 16 --stops 3 --csv --table-stops 3 --table-fraction 3 --formulas`
+
 You can add `--relative` to any combination to display the
 calculations relative to the base time instead of as absolute times.
 
+`$ fstop-print-calc 16 --stops 3 --csv --table-stops 3 --table-fraction 3 --relative`
+
+You can export it as an Emacs org-mode table with `--org`.  All of the
+table options are also available for org-mode: `--table-stops`,
+`--table-fraction`, `--formulas`, and `--relative`.
+
+`$ fstop-print-calc 16 --stops 3 --org --table-stops 3 --table-fraction 3 --formulas`
+
 
 # The math