What functionality is missing? What is unsatisfying with the current situation?

Currently we write articles and secrets separately (as far as I know at least) This implies a lot of article-/tab-hopping. Currently this approach does not allow fully maximized productivy.    As far as I know I can link secrets with articles, but I can not have them directly "in" the article, which would make things faster and more managable.      

How does this feature request address the current situation?

With the feature we will have a much more streamlined workflow: Write an article e.g. about a location.  Like general description etc plus some secrets as well - all in the same article.    With the new feature I could then mark relevant paragraphs as secrets, hiding them for my party.  Advantages of this feature:  1. This way I only need to share one article with my group 2. I can unhide secrets in the article as soon as they discover them.  3. I can use the article as a script, since it contains all relevant information for me, because as a DM I can see them right away, without switching tabs.   

What are other uses for this feature request?

In the long run this feature could be expanded: E.g. with a EventListener-logic like: OnUnlock: Gain 100 EXP to the unlocking party or so, which will further streamline DM-ing with World Anvil.    In case there is no feature like this, maybe you may find time to consider this. Thank you and keep up the good work.    Best regards,   Tim