doc improvement

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@15461 71c3de6d-444a-0410-be80-ed276b4c234a

remoting/src/main/java/hudson/remoting/ProxyOutputStream.java

@@ -198,6 +198,9 @@ final class ProxyOutputStream extends OutputStream {
 
     /**
      * {@link Command} for releasing an export table.
+     *
+     * <p>
+     * Unlike {@link EOF}, this just unexports but not closes the stream.
      */
     private static class Unexport extends Command {
         protected final int oid;