(Parameters): Document "Lock file:".

doc/lyskomd.texi

 \input texinfo
-@c $Id: lyskomd.texi,v 1.17 1999/05/18 13:06:21 byers Exp $
+@c $Id: lyskomd.texi,v 1.18 1999/05/21 06:45:45 ceder Exp $
 @c %**start of header
 @setfilename lyskomd.info
 @include version.texi
@@ -303,6 +303,12 @@ of the backup of the database is kept. This file may be needed if an
 error in the backup file is detected during the creation of the data
 file. Default is @file{db/lyskomd-backup-prev}.
 
+@item Lock file: @var{path}
+Name of the lock file that ensures that @code{dbck} and @code{lyskomd}
+never attempt to modify the database at the same time.  It should always
+reside in the same directory as the @samp{Data file}.  Default is
+@file{db/lyskomd-lock}.
+
 @item Text file: @var{path}
 The path relative to the installation prefix where the actual texts in
 the database are kept. Default is @file{db/lyskomd-texts}.