I define some variables at Page Level when entering the Page. Can I somewhere see where which variable is used, e.g. in which other event or Codeless Logic?
I am not quite sure whether this is helpful for you. Defined Variables are used in other Content Logic or Visability Logic of other elements. But, where exactly?
Short answer - they are not used anywhere.
When you define a variable, she has a scope. So if you create two variables with the same name in different handlers - it’s two absolutely different variables.
I was not precise enough. I am talking about the variables that I set in Page Data, not the lical variables.
Unfortunately, bu we have no opportunity to detect where are using Page Data properties.