diff --git a/README.adoc b/README.adoc
index 42776c22..63d68ad2 100644
--- a/README.adoc
+++ b/README.adoc
@@ -165,11 +165,6 @@ Documentation http://cedeela.fr/~simon/software/containers[here].
   access to elements by their index.
 - `CCImmutArray`, immutable interface to arrays
 
-=== Containers.io
-
-*deprecated*, `CCIO` is now a <<core,core>> module. You can still install it and
-depend on it but it contains no useful module.
-
 === Containers.unix
 
 - `CCUnix`, utils for `Unix`
diff --git a/doc/intro.txt b/doc/intro.txt
index 7e96e213..6851f876 100644
--- a/doc/intro.txt
+++ b/doc/intro.txt
@@ -121,6 +121,21 @@ CCKList
 CCKTree
 CCLazy_list}
 
+{4 String}
+
+containers.string has been removed. Some of its functionality is present
+in {!CCString}; some in other libraries such as [Spelll].
+
+{4 Bigarrays}
+
+containers.bigarray has been removed. Use the [Bigstring] library for
+arrays of bytes.
+
+{4 Advanced}
+
+containers.advanced has been removed. Use [OLinq] to replace some of its
+functionality.
+
 {4 Misc}
 
 Moved to its own repository.