carettah 0.5.1-2build1 (arm64 binary) in ubuntu focal

 A presentation tool, Carettah generates new presentation boilerplate
 and displays it when invoked like `carettah -n markdown.md`. You can
 then edit the Markdown and hit 'r' to re-render.
 It can be controlled by keyboard or Wiimote.
 .
 It's a clone of the rabbit package, written in Haskell.