Consider a notebook with a cell with two lines of code:
[1, 2, 3]
"foo bar"
The default in notebooks is to just render/show the value of the last expression (`"foo bar"`). In pdit, the value of all top-level expressions are rendered/shown:
[1, 2, 3] #=> [1, 2, 3]
"foo bar" #=> "foo bar"
In that way it is more like a REPL than a notebook, you could say.
Allow me to mention my project Ankivalenz[1], which turns structured HTML files into Anki decks. I use it with Quarto[2][3] to generate my Anki decks. Instead of having an unorganized "pool" of Anki cards, I can create hierarchical, well-organized notes and turn them into an Anki deck. This makes it easier to create Anki decks, but more importantly, it makes it easier to keep Anki decks up to date.