-- `ilo file.ilo` auto-runs `main` when a multi-function file
-- defines one. SKILL.md: "Multi-function files require either a
-- function name argument or a function called `main`."
--
-- This example also pins that explicit func args still work and
-- that helpers can be called from main like any other fn.
helper a:n>n;+a 1
main>n;helper 41
-- run: main
-- out: 42
-- run: helper 9
-- out: 10