When I want to reorganize the contents of a bookmark toolbar folder, I naturally start by right clicking on that folder, which gives me a context menu like I'd expect, but mysteriously missing is anything resembling a "Manage this folder" command. Thinking about it, I guess what that would do nowadays is open up a/the Library window to the folder in question; I don't really care about what the window is called, though, I just want to open it up without having to navigate the Bookmark menu/icon, remember the key sequence to open "all bookmarks", *or* navigate two levels down the tree after that. I'm not afraid of about:config, but nothing useful-looking came up for "bookmark" or "places".