diff --git a/ReadMe.md b/ReadMe.md
index 48cb2ea..31cf50b 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -11,3 +11,4 @@
   - [ ] Renormalize to Earth extremes. :D (This will probably give bad initial results and need extensive changes.)
   - [ ] Use a spreadsheet to map -0.9 to 0.9 to find a mapping function to modify initial values to realistic height ranges!
   - [ ] Rename `humidity` to `rainfall`.
+- [ ] make documentation of how this is all working so I can remember when I forget to work on it for a while
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