Push, Pull, Next!
http://www.xml.com/pub/a/2005/07/06/tr.html

DuCharme, Bob
XML.com
2005

Abstract:

In a recent weblog post, XML.com's "Python and XML" columnist Uche Ogbuji provided a nice collection of links to discussions about the push vs. pull styles of XSLT stylesheet development. What do we mean by "push" and "pull"? As a short example of each, let's look at two approaches to converting the following DocBook document to XHTML.