Index: man/nginx.8
--- man/nginx.8.orig
+++ man/nginx.8
@@ -99,6 +99,23 @@ Do not run, just test the configuration file.
 .Nm
 checks the configuration file syntax and then tries to open files
 referenced in the configuration file.
+.It Fl u
+By default
+.Nm
+will
+.Xr chroot 2
+to the home directory of the user running the daemon,
+typically
+.Dq www ,
+or to the home directory of
+.Ic user
+in
+.Pa nginx.conf .
+The
+.Fl u
+option disables this behaviour, and returns
+.Nm
+to the original "unsecure" behaviour.
 .It Fl V
 Print the
 .Nm