How do I select and UNSELECT radio button in a group?

[lf_877]

So I have several groups of radio buttons. The reason I chose to use radio buttons is that only one button should be selectable in each group. But it should also be possible to make no selection at all, or to deselect the radio button you've mistakenly selected. And that's my problem. How to deselect a radio button in a group. (NOT the entire form.)

I've read that groups of checkboxes are the way to go instead of radio buttons, but I don't understand how. If someone can explain in easy to understand English for someone who is not that used to Acrobat I would be very grateful.

[PDF Automation Station]

To make a group of check boxes act like radio buttons, simple name the fields identically and use a different export value for each check box.  The check box group can be cleared by selecting the one that is already selected.  You can unselect a radio button group by clicking.  You would have to make another trigger like a button field with mouse up action and the following script:

this.getField("Group1").value="Off";