The links to demo source codes in this page: http://commons.apache.org/jelly/tutorial.html are dead. They return 404 Not Found error. Please fix the links.
Indeed, this is an issue.
I am not sure when we shall be able to rebuild the site for good.
In the meantime, please use http://svn.apache.org/viewvc/commons/proper/jelly/trunk/ as basis.
The files had moved from their original locations, which is why the cvs => svn redirect did not work.
Temporary fix applied to HTML files; this should show up in a few hours on the main site.
Also fixed XML source files so eventual rebuild will hopefully keep the changes