Whitespace normalization, via reindent.py.
diff --git a/Doc/tools/prechm.py b/Doc/tools/prechm.py
index 09c2c43..7b2f393 100644
--- a/Doc/tools/prechm.py
+++ b/Doc/tools/prechm.py
@@ -438,8 +438,8 @@
     return p
 
 def usage():
-        print usage_mode
-        sys.exit(0)
+    print usage_mode
+    sys.exit(0)
 
 def do_it(args = None):
     if not args: