Last time out, you learned about sequences, and how they could be processed with the <dtml-in> loop construct. You also learned about the special variables that DTML provides to developers to help them identify and take advantage of special sequence elements - the first element, the last element, odd and even elements and so on. Finally, you wrapped things up with a couple of simple applications based on sequences - a pager and a directory viewer.
In this final article in the series, I'm going to conclude this tour of DTML by introducing you to a couple of other members of the family - the <dtml-with> construct, which lets you manipulate the DTML namespace; the <dtml-let> construct, which lets you access variable values in different ways; and the <dtml-tree> construct, which provides a simple, widget-based interface to constructing tree structures in DTML.
