location of generated code

On 8/14/2007 you wrote that I needed to see the HTML code generated by the following snippit:
{build_edit_control field="PRI_FNAME" mode="add" value=$value_PRI_FNAME}
You then said that I could paste it to the Visual Editor and add my onkeyup event. I understand all that but my question is where would I find the generated HTML from the above snippit?
Thanks again,
John B