explanatory comment

build.xml

@@ -298,6 +298,7 @@ POSSIBILITY OF SUCH DAMAGE.
 
     <target name="nuke.dot.viskit" description="Abolish an out of synch configuration and metadata directory - only when necessary">
         <delete includeemptydirs="yes" dir="${dot.viskit.dir}"/>
+        <!-- repopulute with defaults -->
         <mkdir dir="${dot.viskit.dir}"/>
         <copy todir="${dot.viskit.dir}" file="${c_app.xml}"/>
         <copy todir="${dot.viskit.dir}" file="${c_gui.xml}"/>