This is a quick demo of the new scratch buffer behaviour being added to ad

  - Conceptually the scratch buffer is similar to acme's per-window "tag"

  - Instead of having a tag per buffer you have a single shared scratch buffer

  - You can show and hide the scratch buffer using 'Alt-;'

  - You can interact with the content of the scratch buffer in the same way as any other buffer

    -> You can even run the NextSlide command from there, try it out!
