Procedure for Adding a New Control on an Existing Field seems to be missing something.
The procedure for the Adding a New Control for an Existing Field exercise seems to be missing something between steps 8 & 9 (pp 79-80 in Exercise Guide date: 20141218). It jumps from Open section to "When the second opens...". I've done the exercise, so I'm fine with it - just thought the guide might need a fix.