Some updates and corrections in xorriso man page

xorriso/xorriso.1

@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Aug 28, 2009"
+.TH XORRISO 1 "Aug 29, 2009"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -3452,11 +3452,13 @@ in the ISO image so that they become exact copies of their disk counterparts.
 ISO file objects get created, deleted or get their attributes adjusted
 accordingly.
 .br
-ACL, xattr and hard links will be recorded. Accelerated comparison is enabled
-at the expense of potentially larger backup size.
-Only media with the expected volume id or blank media are accepted.
+ACL, xattr, hard links and MD5 checksums will be recorded.
+Accelerated comparison is enabled at the expense of potentially larger backup
+size. Only media with the expected volume id or blank media are accepted.
 Files with names matching *.o or *.swp get excluded explicitely.
 .br
+When done with writing the new session gets checked by its recorded MD5.
+.br
 \fB$\fR xorriso \\
 .br
  -for_backup -disk_dev_ino on \\
@@ -3473,7 +3475,7 @@ Files with names matching *.o or *.swp get excluded explicitely.
 .br
  -update_r /home/thomas/personal_mail /personal_mail \\
 .br
- -commit -toc -eject all
+ -commit -toc -check_md5 FAILURE -- -eject all
 .br
 To be used several times on the same media, whenever an update of
 the two disk trees to the media is desired. Begin with blank media and start