$Id$There are two menu systems included with SYSLINUX, the advanced menusystem, and the simple menu system.+++ THE ADVANCED MENU SYSTEM +++The advanced menu system, written by Murali Krishnan Ganapathy, islocated in the menu/ subdirectly.  It allows the user to createhierarchial submenus, dynamic options, checkboxes, and just aboutanything you want.  It requires that the menu is compiled from asimple C file, see menu/simple.c and menu/complex.c for examples.The advanced menu system doesn't support serial console at this time.See menu/README for more information.+++ THE SIMPLE MENU SYSTEM +++The simple menu system is a single module located atcom32/modules/menu.c32.  It uses the same configuration file as theregular SYSLINUX command line, and displays all the LABEL statements.To use the menu system, simply make sure menu.c32 is in theappropriate location for your boot medium (the same directory as theconfiguration file for SYSLINUX, EXTLINUX and ISOLINUX, and the samedirectory as pxelinux.0 for PXELINUX), and put the following optionsin your configuration file:DEFAULT menu.c32PROMPT 0There are a few menu additions to the command line, all starting withthe keyword MENU; like the rest of the SYSLINUX config filelanguage, it is case insensitive:MENU TITLE title	Give the menu a title.  The title is presented at the top of	the menu.MENU LABEL label	(Only valid after a LABEL statement.)	Changes the label displayed for a specific entry.  This allows	you to have a label that isn't suitable for the command line,	for example:	# Soft Cap Linux	LABEL softcap		MENU LABEL Soft Cap ^Linux 9.6.36		KERNEL softcap-9.6.36.bzi		APPEND whatever	# A very dense operating system	LABEL brick		MENU LABEL ^Windows CE/ME/NT		KERNEL chain.c32		APPEND hd0 2	The ^ symbol in a MENU LABEL statement defines a hotkey.	The hotkey will be highlighted in the menu and will move the	menu cursor immediately to that entry.	Reusing hotkeys is disallowed, subsequent entries will not be	highlighted, and will not work.	Keep in mind that the LABELs, not MENU LABELs, must be unique,	or odd things will happen to the command-line.MENU HIDE	(Only valid after a LABEL statement.)	Suppresses a particular LABEL entry from the menu.MENU DEFAULT	(Only valid after a LABEL statement.)	Indicates that this entry should be the default.  If no	default is specified, use the first one.MENU PASSWD passwd	(Only valid after a LABEL statement.)	Sets a password on this menu entry.  "passwd" can be either a	cleartext password or a SHA-1 encrypted password; use the	included Perl script "sha1pass" to encrypt passwords.	(Obviously, if you don't encrypt your passwords they will not	be very secure at all.)	If you are using passwords, you want to make sure you also use	the settings "NOESCAPE 1", "PROMPT 0", and either set	"ALLOWOPTIONS 0" or use a master password (see below.)	If passwd is an empty string, this menu entry can only be	unlocked with the master password.MENU MASTER PASSWD passwd	Sets a master password.  This password can be used to boot any	menu entry, and is required for the [Tab] and [Esc] keys to	work.MENU WIDTH 80MENU MARGIN 10MENU PASSWORDMARGIN 3MENU ROWS 12MENU TABMSGROW 18MENU CMDLINEROW 18MENU ENDROW 24MENU PASSWORDROW 11MENU TIMEOUTROW 20	These options control the layout of the menu on the screen.	The values above are the defaults.The menu system honours the TIMEOUT command; if TIMEOUT is specifiedit will execute the ONTIMEOUT command if one exists, otherwise it willpick the default menu option.Normally, the user can press [Tab] to edit the menu entry, and [Esc]to return to the SYSLINUX command line.  However, if the configurationfile specifies ALLOWOPTIONS 0, these keys will be disabled, and ifMENU MASTER PASSWD is set, they require the master password.The simple menu system supports serial console, using the normalSERIAL directive.  However, it can be quite slow over a slow seriallink; you probably want to set your baudrate to 38400 or higher ifpossible.  It requires a Linux/VT220/ANSI-compatible terminal on theother end.It is also possible to load a secondary configuration file, to get toanother menu.  To do that, invoke menu.c32 with the name of thesecondary configuration file.LABEL othermenu	MENU LABEL Another Menu	KERNEL menu.c32	APPEND othermenu.conf