Changes to the core Kickstart syntax are quite rare. However, there are two important syntax changes to be aware of:
The %include option can now accept a URL as an argument, in addition to a file name.
The %packages, %post, %pre and %traceback sections should now have an %end option at the end. Previously, these sections had no explicit ending token, but ended where another began. Starting in Red Hat Enterprise Linux 6, using %end is recommended (and in future releases will be required). At that point, files without an %end token will fail. Please begin adding this to files as soon as possible to prevent problems in the future.
