Button to remove / unlink / unreference

Thank you for an _incredibly_ important module!

My request is to add an "unlink" button next to "add" and "edit." This would ensure that all the key functions (add, edit, unlink) have an intuitive UI that will work for a wide audience.

When using the autocomplete widget for a nodereference field, the standard (Drupal) workflow for removing a reference to a node is not very obvious: delete all text in the autocomplete field, and then save.

For most users, it would be much more intuitive to also have a button that would remove the nodereference. The icon could be an "X," or perhaps a broken link. The tooltip for the icon could specify that clicking the button will remove the link to this content, but not delete the content itself.