note bart <blockquote><i>Yet, I've never heard of spawn in this context before. And I can't seem to find it listed on Wikipedia, either. What type of system is it associated with, and what are the semantic differences between spawn versus fork or threads?</i></blockquote> It sounds familiar to me, because of the node [id://192421]. <p>"To spawn" is to produce offspring, hence, creating a child process. No mystery there. You can do it by calling [system], for example. 594605 594689