sp; elaboration

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@568633 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/CoreTypes/fileset.html

@@ -103,9 +103,9 @@ equivalent to an <code>&lt;and&gt;</code> selector container.</p>
     <td valign="top">
       Specify what happens if the base directory does not exist.
       If true a build error will happen, if false, the fileset
-      will be ignored.
+      will be ignored/empty.
       Defaults to true.
-      <em>Since Ant 1.7.1 (default is true for backward compatiblity
+      <em>Since Ant 1.7.1 (default is true for backward compatibility
         reasons.)</em>
     </td>
     <td valign="top" align="center">No</td>