Description:

Petal is a XML based templating engine that is able to process any
kind of XML, XHTML and HTML.

Petal borrows a lot of good ideas from the Zope Page Templates TAL
specification, it is very well suited for the creation of WYSIWYG
XHTML editable templates.

The idea is to further enforce the separation of logic from
presentation. With Petal, graphic designers can use their favorite
WYSIWYG editor to easily edit templates without having to worry about
the loops and ifs which happen behind the scene.