remind myself what the filename addendum is supposed to be like

diff --git a/make_all_dist.py b/make_all_dist.py
index 342ca98..afe82fd 100644
--- a/make_all_dist.py
+++ b/make_all_dist.py
@@ -34,7 +34,7 @@ if __name__ == '__main__':
     else:
         sys.exit()

-    fname_addendum = raw_input("Filename addendum? ")
+    fname_addendum = raw_input("Filename addendum (start with '_')? ")

     #delete old build dir.
     print r'rd /S /Q build'