Comment by ichverstehe

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.