I initially thought 2!:1 spawns a process and returns the process id, which I can use with 2!:3 to wait until the process finishes.
But it turns out that 2!:1 returns an empty string. Is there a foreign that does what I want? What purpose does 2!:3 serve when there isn't a foreign that returns a process id? Thanks, Jinwoo ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
