Only info I found was this:
http://forrst.com/posts/Node_js_Jade_Import_Jade_File-CZW
I replicated the suggested folder structure (views/partials) But it didn\'t
As of August 2012 (possibly earlier) Partials have been removed from Express.
A lot of tutorials are now out of date. It seems that you can replicate much of the partial functionality with include.
Eg.
movies.jade
div(id='movies')
- each movie in movies
include movie
movie.jade
h2= movie.title
.description= movie.description
HTH