print "hello";
     sleep 2;
     print "goodbye";

##</code><code>##

     hellogoodbye <wait for 2 seconds>

##</code><code>##

     hello<wait for 2 seconds>goodbye

##</code><code>##

     print "hello\n";
     sleep 2;
     print "goodbye";

##</code><code>##

     hello
     <wait 2 seconds>
     goodbye