List/Index of used variables

Hello, I'm new to Twine and to scrypting at all, and my question is:

How can I make a list of variables already used in my story, in every paragraph? Is there such an option? Is there a possibility to automatically include used variables to that list/index?

I've tried to understand how are (database:) and (array:) working, but as far as I understand, they are not what I am looking for.

Thank you for answering!