Small changes add up faster than most people expect.
Most people meet this once and never think about it again, which is exactly why it is worth reading up on.
What actually changed
Most of the confusion comes from two terms that sound alike and mean different things. There is a deadline involved, and missing it costs more than the difference.
The exceptions
Nobody is required to explain this to you, which is half the problem. The exceptions matter more than the rule, and there are three of them.
Where the confusion starts
The practical effect is easier to see in a single example than in a summary. The exceptions matter more than the rule, and there are three of them.
None of this is urgent, but it is worth an hour before the next renewal.
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