diff --git a/README b/README
index a3c8119..49afb6c 100644
--- a/README
+++ b/README
@@ -92,6 +92,11 @@
  All of these functions return either "" or 0 when the specified node or
  attribute could not be found. No errors are generated.
 
+ The namespace name specified in the functions above must either match the
+ namespace you expect a node/attr to have, or you can specify a wildcard "*".
+ This makes node searches easier in case you do not care what namespace name
+ there is or if there is one at all.
+
 ================================================================================
  LICENSE
 ================================================================================