In the section where you remove the event listeners you can append the ">" prompt...

                    }

          else

                    {

                    removeEventListener(Event.ENTER_FRAME, frameLooper);

                     tf.appendText( ">" ); 

                    }

Having the blinking cursor is possible, but is also often a bit of a hair puller to do so with AS3 code.  For myself, it seldom works, while others have no problem.  Here is the solution most commonly offered (relative to what you are doing)...

     removeEventListener(Event.ENTER_FRAME, frameLooper);

     tf.appendText(">");

     stage.focus = tf;

     tf.setSelection(tf.text.length,tf.text.length);

You should find that if you don't see the cursor, if you start typoing it will begin filling in after the ">".  You might try testing in the final intended interface (browser, etc) instead of just the player in Flash... sometimes it works in one but not the other.

Your earlier explanation made more sense.  I cannot tell what you are trying to explain or point out in the last posting.

There's not much need to show anymore.  I already provided the code you can try to get a blinking cursor, but also said how it is iffy as far as it actually working. 

The only difference I would offer for the code I provided earlier based on the image you show would be to add a new line before the ">", as in...

     removeEventListener(Event.ENTER_FRAME, frameLooper);

     tf.appendText("\n>");

     stage.focus = tf;

     tf.setSelection(tf.text.length,tf.text.length);  // in an ideal world this line, in league with the focus line preceding it will add the cursor... it just doesn't always work as advertised... especially for me

You're welcome