Question regarding the universal descriptors

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What is the diff. between these kind of bullets

The upper one is a slot, which has nothing to do with universal descriptors unless you want to use their parent rem as a tag to add them.

Thanks.
Also, I have a favor to ask.
Can u tell me how exactly can we use universal descriptors ? what is the difference between universal descriptors, and normal descriptors ?

and usage tips on discord (scroll around a bit)

Thank you very much for the explanation

You’re quite welcome.