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+/* @(#)README.session	1.3 99/03/02 eric */
+
+	This release of genisoimage has basic support completed for
+multiple sessions.  However, we still need some interaction 
+between wodim and genisoimage for this to work correctly. This is needed as
+only wodim knows the different ways to gather these numbers for all 
+different drives. It may be that future versions of genisoimage will include 
+the needed support for MMC compliant drives.
+
+	There are a few new options to genisoimage to allow for this.
+The first one is "-M /dev/scd0", and is used so that genisoimage can examine
+the entirety of the previous image so that it can figure out what additional
+files need to be written in the new session. Note that there are operating
+systems that don't allow to read from CD drives with a sector size
+of 2048 bytes per sector. To use genisoimage on such an operating system, you
+will need a version of genisoimage that includes the SCSI transport library 
+from wodim. Simply use the dev= syntax from wodim with -M in
+such a case. It will tell genisoimage to use the SCSI transport library to 
+read from the CD instead of using the standard read() OS interface.
+
+	There is also a temporary hack in genisoimage in the form of a '-C' option.
+The -C option takes two numbers as input, which are delimited by commas.
+For example, you could specify "-C 1000,1020", but you should never just
+make up numbers to use here.  These numbers are determined from wodim.
+
+	Note that if you use -C and omit -M, it effectively means that
+you are writing a new session, starting at a non-zero block number,
+and you are effectively ignoring all of the previous session contents.
+When this session is sent to the writer, the new session effectively
+"erases" the previous session.
+
+	In practice you should be able to do something like:
+
+genisoimage [other options] -C `wodim dev=b,t,l -msinfo` \
+		-M /dev/cdblkdev
+
+Replace 'b,t,l' by the aproriate numbers for SCSIbus, target and lun
+of your drive.
+
+Note: As of the 1.12b5 release, the multi-session technology has
+matured quite significantly.  It is entirely possible that bugs
+exists, or that further tweaks will be required somewhere along the
+way to get things working correctly.  The data gathering mode of
+wodim has been tested, and I believe it works correctly.  Caveat
+Emptor.
+
+[Mar 1, 1999].
+
+
+Source: README.session from cdrtools package
+Edited for cdrkit by Christian Fromme <kaner@strace.org> and 
+Eduard Bloch <blade@debian.org>
+