TODO: Variable vs binder
TODO: simplification -> Normalisation?
TODO: Use saturated (application) instead of complete (application)?
-TODO: core => Core
TODO: Say something about implementation differences with transformation specs
TODO: Say something about the builtin functions somewhere (ref: christiaan)
TODO: Future work: Use Cλash
TODO: Abstract
TODO: Preface
-TODO: Footnote font has not lambda
-TODO: Top level function -> top level binder