20.19 Setsid ============ -- Command: setsid state (none) Normally 'screen' uses different sessions and process groups for the windows. If setsid is turned 'off', this is not done anymore and all windows will be in the same process group as the screen backend process. This also breaks job-control, so be careful. The default is 'on', of course. This command is probably useful only in rare circumstances.