What does "Remove" button do?

I'd like to have the empty metadata fields not appear -- and thought the "Remove" buttons at the bottom of each field would do that, but they don't seem to do anything at all. Am I missing something?


That is a good question about "Remove" because it is confusing and we are about to fix that for the upcoming stable release.

Remove really should only apply when you have added more than one additional field for a specific element, like 3 title inputs when you only need 2. When there is only 1 input per field, you cannot remove it--this is to prevent admin side accidents.

To answer your question about not displaying empty metadata fields, you will want to add an argument to your items/show page within the current public theme you are using, like this:
<?php echo show_item_metadata(array('show_empty_elements' => false));

This is all documented in the codex here: http://omeka.org/codex/Theme_API/show_item_metadata

Hope this helps,