Hi It was notice that ui:repeat implementation has "begin" and "end" properties, but there are not mentioned in the javadoc. After talk with Martin Marinschek, the conclusion was this is an undocumented feature, but it is provided by Mojarra. For this issue I opened this one: https://javaserverfaces-spec-public.dev.java.net/issues/show_bug.cgi?id=892 Thanks for your attention. regards, Leonardo