Momentarily inverts the lcd to indicate an error
Momentarily inverts the LCD display to indicate than an input error has occured.
Indicates the flash should be performed silently. Don't print anything to STDOUT unless absolutely needed.
Written by Sun Microsystems. Modified by Jeff Walter
Report bugs to <[email protected]>.
Copyright © 2002 Sun Microsystems, Inc.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.