Does this support pipes? It's not clear to me what runs in the same process and what forks a new one. Is there a way to run some shell code in a sub-process (pa

Does this support pipes? It's not clear to me what runs in the same process and what forks a new one. Is there a way to run some shell code in a sub-process (parentheses in conventional shell)? Asynchronously (& in conventional shell)?