diff --git a/docs/manual/CoreTasks/javac.html b/docs/manual/CoreTasks/javac.html
index 5fff13770..17b2838c6 100644
--- a/docs/manual/CoreTasks/javac.html
+++ b/docs/manual/CoreTasks/javac.html
@@ -416,31 +416,39 @@ used.</p>
          destdir=&quot;${build}&quot;
          classpath=&quot;xyz.jar&quot;
          debug=&quot;on&quot;
+         source=&quot;1.4&quot;
   /&gt;</pre>
 <p>compiles all <code>.java</code> files under the <code>${src}</code>
 directory, and stores
 the <code>.class</code> files in the <code>${build}</code> directory.
 The classpath used includes <code>xyz.jar</code>, and compiling with
-debug information is on.</p>
+debug information is on. The source level is 1.4,
+so you can use <code>assert</code> statements.</p>
 
 <pre>  &lt;javac srcdir=&quot;${src}&quot;
          destdir=&quot;${build}&quot;
          fork=&quot;true&quot;
+         source=&quot;1.2&quot;
+         target=&quot;1.2&quot;
   /&gt;</pre>
 <p>compiles all <code>.java</code> files under the <code>${src}</code>
 directory, and stores the <code>.class</code> files in the
 <code>${build}</code> directory.  This will fork off the javac
-compiler using the default <code>javac</code> executable.</p>
+compiler using the default <code>javac</code> executable.
+The source level is 1.2 (similar to 1.1 or 1.3) and
+the class files should be runnable under JDK 1.2+ as well.</p>
 
 <pre>  &lt;javac srcdir=&quot;${src}&quot;
          destdir=&quot;${build}&quot;
          fork=&quot;java$$javac.exe&quot;
+         source=&quot;1.5&quot;
   /&gt;</pre>
 <p>compiles all <code>.java</code> files under the <code>${src}</code>
 directory, and stores the <code>.class</code> files in the
 <code>${build}</code> directory.  This will fork off the javac
 compiler, using the executable named <code>java$javac.exe</code>.  Note
-that the <code>$</code> sign needs to be escaped by a second one.</p>
+that the <code>$</code> sign needs to be escaped by a second one.
+The source level is 1.5, so you can use generics.</p>
 
 <pre>  &lt;javac srcdir=&quot;${src}&quot;
          destdir=&quot;${build}&quot;
@@ -455,7 +463,9 @@ directory, and stores the
 The classpath used includes <code>xyz.jar</code>, and debug information is on.
 Only files under <code>mypackage/p1</code> and <code>mypackage/p2</code> are
 used. All files in and below the <code>mypackage/p1/testpackage</code>
-directory are excluded from compilation.</p>
+directory are excluded from compilation.
+You didn't specify a source or target level,
+so the actual values used will depend on which JDK you ran Ant with.</p>
 
 <pre>  &lt;javac srcdir=&quot;${src}:${src2}&quot;
          destdir=&quot;${build}&quot;