added an intro for the code sample so that its not construed as a "synopsis"

diff --git a/doc/build/content/plugins.txt b/doc/build/content/plugins.txt
index eb80e6b82c72379dd9c7c7f4a9f14450938ff713..f46a33d3b7a136e2554b1facf87aaff768378e43 100644 (file)
--- a/doc/build/content/plugins.txt
+++ b/doc/build/content/plugins.txt
@@ -13,6 +13,8 @@ SQLAlchemy has a variety of extensions available which provide extra functionali
 
 #### Simplifying Relations
 
+Consider this "association object" mapping:
+
     {python}
     users_table = Table('users', metadata,
         Column('id', Integer, primary_key=True),