1 files changed, 3 insertions, 0 deletions
diff --git a/README b/README
index 58b2669..9064a99 100644
--- a/README
+++ b/README
@@ -199,6 +199,9 @@ MellonPostCount 100
         # The username is passed on to other apache modules and to the web
         # page the user visits. NAME_ID is an attribute which we set to
         # the id we get from the IdP.
+        # Note: If MellonUser refers to a multi-valued attribute, any single
+        # value from that attribute may be used. Do not rely on it selecting a
+        # specific value.
         # Default: MellonUser "NAME_ID"
         MellonUser "NAME_ID"