diff --git a/README.md b/README.md
index d568f96..cb0a093 100644
--- a/README.md
+++ b/README.md
@@ -93,3 +93,16 @@ Support Modules
 ### Testing
 
 ### Utils
+
+To ensure there are no external dependencies (including chicken eggs),
+this module re-implements any basic procedures which are required for
+any algorithms used.
+
+#### Filter
+
+    (filter pred? lst)
+
+* ```pred?``` - procedure accepting any value and returning #t or #f
+* ```lst``` - list to be filtered
+
+Returns a list containing only elements matching given ```pred?``` predicate.