Rendering a Pageset

Rendering of a page set is done with a simple hierarchical set of templates, which can be found in the /layout-manager/lib/render directory. Rendering consists of the following steps:

include the render pageset template, which gets an array of render data for the given pageset and then
includes the render page template, which gets an array of render data for the current page within the pageset and then
includes the page template for the given page, which sets the proper CSS for (say) a thin column on the left and a thick column on the right, and generates the proper HTML for the number of columns on the page, and then
includes the render element template for each element on the page, which gets an array of render data for the given element. The includelet referenced by the element is included, while the theme assigned to the element is declared as the master template. If the includelet is declared to be .LRN-compatible, parameters are passed in an array named "cf", otherwise parameters are set directly in the scope of the includelet.

You can safely treat this process as a "black box" when writing an includelet, as will be obvious when you study some examples.