Bookmark Keywords
Firefox's best-kept secret feature.
When you bookmark a page, firefox opens an editor with the following options: * Name * Location * Tags
But there's actually a secret fourth field...
The Other “Edit Bookmark” menu
there are two ways of editing a bookmark: 1. going to the bookmarked page and clicking the star icon (this is the same menu that shows up when you first create a bookmark) 2. the “Edit Bookmark...” context menu option (this has the same fields as the “Manage Bookmarks” view)
turns out, there's actually some fields that are exclusive to one or the other
Location
Turns out, this is only shows up in the first menu, I guess because you're expected to drag and drop bookmarks to move them around otherwise
Confusingly, in the “Manage Bookmarks” view, the URL column is labeled as “Location”.
URL
Only available in the second menu, allows you to change the specific page that is bookmarked.
Keyword
This is the exciting one, and its hidden behind the second menu.
If you give a bookmark a keyword, you can navigate to the bookmarked page just by typing that keyword into the navigation bar and hitting enter.
This is useful if you have certain pages you access very often, especially if they are not at the domain root. For example, I have “ns” set to link to The Nightly Rust Standard Library Documentation, which is otherwise annoyingly requires typing out the domain name, and two path elements.