In Business Objects how can I get a list of reports using a specific universe?

I have been asked the following related questions a few times in the past months and I thought it would be a good idea to post a public answer to them. First the questions:

Is there any way to get a list of reports that are using a specific universe?
If I change this universe which [...]

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Everyone once in a while you come across something that makes you say, “that is great, now why didn’t I think of that?”. Recently I came across such a thing: an idea of how to make operators in the WHERE clause of a query definable by the user at the moment of report refresh [...]

Continue reading about Selective Operators: Allowing Users to Decide Which Operator to Use