diff --git a/README.md b/README.md
index 377b6852..6083c7e0 100644
--- a/README.md
+++ b/README.md
@@ -52,8 +52,8 @@ structures comprise (some modules in `misc/`, some other in `core/`):
 - `CCPersistentHashtbl`, a semi-persistent hashtable (similar to [persistent arrays](https://www.lri.fr/~filliatr/ftp/ocaml/ds/parray.ml.html))
 - `CCVector`, a growable array (pure OCaml, no C) with mutability annotations
 - `CCGen` and `CCSequence`, generic iterators structures (with structural types so they can be defined in several places). Now also in their own repository and opam packages (`gen` and `sequence`).
-- `CCKlist`, a persistent iterator structure (akin to a lazy list)
-- `CCList`, functions and lists including tail-recursive implementations of `map` and `append` and many other utilities
+- `CCKList`, a persistent iterator structure (akin to a lazy list)
+- `CCList`, functions on lists, including tail-recursive implementations of `map` and `append` and many other things
 - `CCArray`, utilities on arrays and slices
 - `CCLinq`, high-level query language over collections
 - `CCMultimap` and `CCMultiset`, functors defining persistent structures
@@ -62,14 +62,14 @@ structures comprise (some modules in `misc/`, some other in `core/`):
   - `CCInt`
   - `CCString` (basic string operations)
   - `CCPair` (cartesian products)
-  - `CCOpt` (options)
+  - `CCOpt` (options, very useful)
   - `CCFun` (function combinators)
   - `CCBool`
   - `CCOrd` (combinators for total orderings)
   - `CCRandom` (combinators for random generators)
   - `CCPrint` (printing combinators)
   - `CCHash` (hashing combinators)
-  - `CCError` (monadic error handling)
+  - `CCError` (monadic error handling, very useful)
 
 ### String