The [PagedArticlesWebPage] class creates [PagedArticleWebPage] for all folders found inside [code]folder[/code].
The [PagedArticlesWebPage] class enumarates all folders found inside the folder set to it's [code]folder[/code] property, and then creates and sets up [PagedArticleWebPage] classes for each one, and add them as it's children.
It will also generate an index page from the available articles.
The folder to evaluate.