This covers exactly what your describe, and nothing more or less. This is a way of excluding other material from your claim, and therefore limiting its scope. This is a way of getting your claim allowed when there are already other similar inventions. This leaves the door open that there could be more elements in the claim that are not discussed. You are most likely to be able to have an open-ended claim when there are not many similar technologies.
Separate process claims from product claims.
This means the claims should thoroughly discuss all process-related claims, and then list all claims about the product that enables the process. The claims tell what it does. The use can be an illustration or example. Yes, even if it goes on for several pages, write all of your claims as one sentence. Insider Tips on Claiming Your Invention Patent examiners are pressured with productivity requirements.