Recall bookmarked state to server

I have an app running on shiny server pro that users access via a URL. When bookmarking to the URL, the actual URL is too long, and not humans readable. So, I think I would prefer to bookmark to server.

However, I have three questions:

  1. Can the user name the bookmark file and save it to a specific location that contains the bookmarked state?
  2. If the bookmarked state is saved to a named file, how does a user load those settings back when they come back to the URL?
  3. Can the file saved to the server be opened in a human-readable format and even modified in that format and then loaded back to shiny when they open the URL?