Map as the value in a dataTable?

[Jonathan Harley]

I've seen it stated on several webpages about JSF, and in the archives 
of this mailing list, that you can pass a Map to a dataTable as the 
value. I was expecting the var to contain each Map.Entry from the Map 
when I did this using t:dataTable, but in fact the table only has one 
row, and the var is the entire map. Am I missing something blindingly 
obvious?