The PDDP patches could be broken down into three categories.
reference (*-help.pd)
This patch would have a mostly text-based explanation of the inlets, outlets, and arguments. A simple example is also appropriate. At the bottom are links to further information and examples.
doc/pddp/float-help.pd is a good example of this
examples (*-example.pd)
This patch would have more elaborate examples for a certain object.
allabout (*-about.pd)
This patch is organized around a single concept rather than a single object. It outlines many ways to approach the concept with text, examples, and links to related PDDP files and objects.
doc/pddp/all_about_arrays is a good example of content. doc/pddp/all_about_data_types is an example, (but not quite finished)