Select

If I have a select or select1 element, I want to add a "Select One" type of "option" to the list of items. Of course, I don't want this to be selectable. This is necessary b/c, otherwise, once a person has selected an item, there is not way to deselect and leave all of the options unselected. By having a "Select One" option, I could provide an alternative. But I don't want to have to process it on the back end and ignore the "Select one" if it's chosen. I want the system to know that this choice is empty. I tried creating an option with an empty value, but the page would not submit.