You can make blank entries by just clicking on Add about 123done

[jbonacci]

Odd, so the checks don't show and the blank content obviously does not show, but if you click in the area of a blank item, you get the red "x". Now it is confusing...so we should fix this behavior

[chilts]

This is still the case in a slightly different manner. You can't now 'add' an item which is blank ... but you can add an item consisting of only spaces. The weird layout mentioned above still applies with a space-only item.

I'm gonna disallow a space-only item (since someone has already disallowed a completely empty item). :)