diff --git a/README.md b/README.md
index d541ca7..91fdb5c 100644
--- a/README.md
+++ b/README.md
@@ -347,10 +347,11 @@ It emits one warning about something I already took care of, so by default I've
   - [x] Add to header file
   - [x] Provide example algebra
   - [x] Add conversion between 90% ci and parameters.
-  - [ ] Use that conversion in conjuction with small algebra.
-  - [ ] Consider ergonomics of using ci instead of c_i
-    - use named struct instead
-    - demonstrate and document feeding a struct directly to a function; my_function((struct c_i){.low = 1, .high = 2});
+  - [x] Use that conversion in conjuction with small algebra.
+  - [x] Consider ergonomics of using ci instead of c_i
+    - [x] use named struct instead
+    - [x] demonstrate and document feeding a struct directly to a function; my_function((struct c_i){.low = 1, .high = 2});
+  - [ ] Consider desirability of defining shortcuts for those functions. Adds a level of magic, though.
   - [ ] Test results
   - [x] Move to own file? Or signpost in file? => signposted in file.
 - [ ] Disambiguate sample_laplace--successes vs failures || successes vs total trials as two distinct and differently named functions