It seems like it's impossible to render a button element automatically using the `FormCollection` view helper without label.

Whenever possible, I render forms this way:

```
<?php echo $this->form()->openTag($this->form); ?>
    <?php echo $this->formCollection($this->form); ?>
<?php echo $this->form()->closeTag($this->form); ?>

```

However, the `FormButton` view helper, that is invoked by `FormCollection`, awaits the button's content as second param to the `render()` method -- or a label option. If I set the label, the button renders correctly, but, you guess it, with label.

I tried to figure out a workaround for this by browsing through the code, but I can't see one.

**Note:** FormButton renders `<button>...</button>` elements. I could also live with a `<input type="button" />` element.

Am I missing something here? Thanks in advance!