Which "function discovery feature" do you mean? That sounds like something that would be nice to add. The documentation page includes all the functions availab

Which "function discovery feature" do you mean? That sounds like something that would be nice to add. The documentation page includes all the functions available in all the libraries you have installed (locally) or that are available in packages (on docs.racket-lang.org) so a single-page list would probably be a little overwhelming.