Question - Starting the Clock

[PocketSidewalk]

I have two questions about the wording of NFHS Rule 3-4-2. I'm a new official, so bear with me if I'm making this more difficult than it really is.

Question 1:
The rule makes sense to me up until the words "or an untimed down". What does this mean?

I've tried reading this sentence several ways, and I just can't seem to get it.

I don't see how the clock would stop for an untimed down, and the clock doesn't run during an untimed down.

Does this mean that if a period is extended for an untimed down then the clock will start with the RFP on the first play of the next period? That doesn't seem right and would seem to contradict 3-4-3g.



Question 2:
Are (a), (b), and (c) just examples of when 3-4-2 would apply, or is that list an extension of the phrase "or an untimed down".




Thanks in advance.