Add fsync option to Postgres manual page.

doc/man/postgres.1

 .\" This is -*-nroff-*-
 .\" XXX standard disclaimer belongs here....
-.\" $Header: /cvsroot/pgsql/doc/man/Attic/postgres.1,v 1.1.1.1 1996/08/18 22:14:26 scrappy Exp $
+.\" $Header: /cvsroot/pgsql/doc/man/Attic/postgres.1,v 1.2 1996/09/26 16:49:09 momjian Exp $
 .TH POSTGRES95 UNIX 11/05/95 Postgres95 Postgres95
 .SH NAME
 postgres \(em the Postgres backend server
@@ -13,6 +13,9 @@ n_buffers]
 .BR "-E"
 ]
 [\c
+.BR "-F"
+]
+[\c
 .BR "-P"
 filedes]
 [\c
@@ -63,6 +66,11 @@ allocate.  This value defaults to 64.
 .BR "-E"
 Echo all queries.
 .TP
+.BR "-F"
+Disbable automatic fsync() call after each transaction.
+This option improves performance, but an operating system crash
+while a transaction is in progress will probably cause data loss.
+.TP
 .BR "-P" " filedes"
 .IR "filedes"
 specifies the file descriptor that corresponds to the socket (port) on