Mention several true conditional statements

SVN revision: 1833

doc/config.html

@@ -1657,7 +1657,7 @@ Comment: ...
     <p>
       Another use of conditional attributes is in conjunction with the option
       <code><b>Message comment</b></code>. Depending on some attribute values,
-      different message comment can be displayed to tell the user what to enter
+      different message comments can be displayed to tell the user what to enter
       exactly in the message body for that attribute value.
     </p>
     <p>
@@ -1718,7 +1718,8 @@ Options Location = Main Building{a}, New Building{b}, Old Building{c}
 {1&amp;a} ...
 </pre>
       </li>
-    </ul>specifies for example the condition "Linux AND Main Building".
+    </ul>specifies for example the condition "Linux AND Main Building". If
+    several lines with condition combinations are true, the upper one is used.
 
     <h2>
       Conditions in the list display