.Fl s
is specified.
.Pp
-By default, the environment is reset.
+The user will be required to authenticate by entering their password,
+unless configured otherwise.
+.Pp
+By default, a new environment is created.
The variables
.Ev HOME ,
.Ev LOGNAME ,
and the
.Xr umask 2
are set to values appropriate for the target user.
+.Ev DOAS_USER
+is set to the name of the user executing
+.Nm .
The variables
.Ev DISPLAY
and