Function session_help 

pub fn session_help(lead: Option<&str>, more: &str) -> String

The paragraph a command’s long help ends with about its session: lead first, for a command whose view is optional (when it runs as a session), then how it runs, the detach and switch keys, how to return, and more at the end. Its views are always opened on something named, so a new start never offers the live sessions; data-beans attach does.