Yep sorry guys, shaded box definitely means subtracting 100'. Most plates don't have that option for the ILS approach however.
Capn'Arr - question 5. Yes you're correct that's why I said you have 10mins to contact ATC, not to give a departure report.
Again, I'm not even sure that's what he's referring to in the question. I've never heard of mandatory time when the actual departure report must be given.