Without further ado, the following was found: Issue: formatting, copy → sync? "Create a pseudo-terminal for the session. The independent terminal provides " "better security as the user does not share a terminal with the original " "session. This can be used to avoid TIOCSTI ioctl terminal injection and " "other security attacks against terminal file descriptors. The entire session " "can also be moved to the background (e.g., B<runuser --pty -u username \\(em " "command &>). If the pseudo-terminal is enabled, then B<runuser> works as a " "proxy between the sessions (copy stdin and stdout)."