A main the caller runs on the process: it receives the first screen and returns an Effect over the userland surface. main is the only thing that returns: the alternative branches of otherwise get past the detour and hand nothing back.
main
otherwise
A
mainthe caller runs on the process: it receives the first screen and returns an Effect over the userland surface.mainis the only thing that returns: the alternative branches ofotherwiseget past the detour and hand nothing back.