code-dot-org/code-dot-org — pull request #632 by joshlory (2014-12-03 03:27:53+00:00)
Title: Add hint for '???' instead of a value in block fields

![screen shot 2014-12-02 at 7 24 52 pm](https://cloud.githubusercontent.com/assets/413693/5275453/432ab96a-7a59-11e4-96c9-6e0542afa8d5.png)