diff --git a/NEWS.txt b/NEWS.txt
index 173ce5a83ae77b1d5ff2a5630bf693d2360ecb8d..f2790eea78f098448b977aa6cab836e30a742503 100644
--- a/NEWS.txt
+++ b/NEWS.txt
@@ -10,6 +10,7 @@ uses of specified oids in the entire database (e.g., suppose oid 0x345620
 is missing -- did it ever exist?  if so, when?  who referenced it?  when
 was the last transaction that modified an object that referenced it?
 which objects did it reference?  what kind of object was it?).
+ZODB/test/testfsoids.py is a tutorial doctest.
 
 
 What's new in ZODB3 3.3 ?
diff --git a/src/scripts/fsoids.py b/src/scripts/fsoids.py
index dd3ce2e8d824bc54db870ed2ef574d8633e82aba..67f341c1499d74c61a1e2e06c064271f00476603 100644
--- a/src/scripts/fsoids.py
+++ b/src/scripts/fsoids.py
@@ -34,6 +34,8 @@ by transaction, from oldest to newest.
 
 This will not alter the FileStorage, but running against a live FileStorage
 is not recommended (spurious error messages may result).
+
+See testfsoids.py for a tutorial doctest.
 """
 
 import sys