init.8 currently has six instances of "single-user mode" and three instances of "single-user shell", so fix the two "single user mode" outliers.
Also, correct the only other two instances of man pages with "single user mode" in afterboot.8 and netstart.8. Index: init.8 =================================================================== RCS file: /cvs/src/sbin/init/init.8,v retrieving revision 1.47 diff -u -p -r1.47 init.8 --- init.8 4 Sep 2011 18:20:48 -0000 1.47 +++ init.8 5 Sep 2016 12:24:32 -0000 @@ -68,7 +68,7 @@ file as explained in the .Xr rc 8 manual. .It Fl s -Boot directly into single user mode. +Boot directly into single-user mode. .El .Pp Single-user mode is also entered if the boot scripts fail. @@ -265,7 +265,7 @@ When starting a window system or the login class .Dq default is used. -No resource changes are made when entering single user mode. +No resource changes are made when entering single-user mode. .Sh FILES .Bl -tag -width /etc/rc.securelevel -compact .It Pa /dev/console Index: afterboot.8 =================================================================== RCS file: /cvs/src/share/man/man8/afterboot.8,v retrieving revision 1.156 diff -u -p -r1.156 afterboot.8 --- afterboot.8 2 Sep 2016 12:17:33 -0000 1.156 +++ afterboot.8 5 Sep 2016 12:29:10 -0000 @@ -386,7 +386,7 @@ For example: .Ss System command scripts The .Pa /etc/rc.*\& -scripts are invoked at boot time, after single user mode has exited, +scripts are invoked at boot time, after single-user mode has exited, and at shutdown. The whole process is controlled, more or less, by the master script .Pa /etc/rc . Index: netstart.8 =================================================================== RCS file: /cvs/src/share/man/man8/netstart.8,v retrieving revision 1.20 diff -u -p -r1.20 netstart.8 --- netstart.8 5 Dec 2015 18:43:12 -0000 1.20 +++ netstart.8 5 Sep 2016 12:29:10 -0000 @@ -38,7 +38,7 @@ .Nm is the command script that is invoked by .Xr rc 8 -during an automatic reboot and after single user mode is exited; +during an automatic reboot and after single-user mode is exited; it performs network initialization. .Pp The