symfony/symfony-docs — pull request #2605 by bschussek (2013-05-05 18:29:00+00:00)
Title: Documented that "empty_value" can be used for expanded choice fields

| Q | A
| ------------- | ---
| Doc fix? | yes
| New docs? | yes (symfony/symfony#7939)
| Applies to | 2.3+
| Fixed tickets | -