See the files in the doc directory for documentation about SYSLINUX: syslinux.txt - Usage instructions; manual. distrib.txt - For creators of Linux distributions. pxelinux.txt - Documentation specific to PXELINUX. isolinux.txt - Documentation specific to ISOLINUX. extlinux.txt - Documentation specific to EXTLINUX. menu.txt - About the menu systems. usbkey.txt - About using SYSLINUX on USB keys. comboot.txt - About the extension API. memdisk.txt - Documentation about MEMDISK. Also see the files: NEWS - List of changes from previous releases. TODO - About features planned for future releases. COPYING - For the license terms of this software. SYSLINUX now builds in a Linux environment, using nasm. You need nasm version 2.03 or later (2.07 or later recommended) to build SYSLINUX from source. See http://www.nasm.us/ for information about nasm. There is now a mailing list for SYSLINUX. See the end of syslinux.txt for details. SYSLINUX is: Copyright 1994-2011 H. Peter Anvin et al - All Rights Reserved 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, Inc., 53 Temple Place Ste 330, Boston MA 02111-1307, USA; either version 2 of the License, or (at your option) any later version; incorporated herein by reference.