-.I pwd_mkdb
-rejects the new file, the user is prompted to re-enter the edit session.
-Once the file is found to be satisfactory,
-.I pwd_mkdb
-installs it as the new password file.
-.PP
-If the password file is already locked, you will be told to try again
-later.
-.SH FILES
-/var/db/pwd.db Insecure password database file
-.br
-/var/db/spwd.db The secure password database file
-.br
-/etc/master.passwd The current password file
-.br
-/etc/passwd A Version 7 format password file
-.br
-/etc/vipw.XXXXXX Temporary copy of the password file
-.SH ENVIRONMENT
-.TP
-EDITOR
-The editor used; the default is
-.IR vi (1).
-Any user specified editor is expected to take the file name it will
-edit as its first argument.
-.SH SEE ALSO
-chpass(1), passwd(1), passwd(5), adduser(8), pwd_mkdb(8)
+.Nm vipw
+rejects the new password file, the user is prompted to re-enter
+the edit session.
+.Pp
+Once the information has been verified,
+.Nm vipw
+uses
+.Xr pwd_mkdb 8
+to update the user database. This is run in the background, and,
+at very large sites could take several minutes. Until this update
+is completed, the password file is unavailable for other updates
+and the new information is not available to programs.
+.Sh ENVIRONMENT
+If the following environment variable exists it will be utilized by
+.Nm vipw :
+.Bl -tag -width EDITOR
+.It Ev EDITOR
+The editor specified by the string
+.Ev EDITOR
+will be invoked instead of the default editor
+.Xr vi 1 .
+.El
+.Sh SEE ALSO
+.Xr chpass 1 ,
+.Xr passwd 1 ,
+.Xr passwd 5 ,
+.Xr adduser 8 ,
+.Xr pwd_mkdb 8
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.0 .