concrete5/concrete5 — pull request #594 by JohntheFish (2012-07-23 15:16:26+00:00)
Title: Provides events that top and tail an area and block wrapper

With these events, an addon will be able to place wrappers round an area or blocks in an area without modifying the theme. This will facilitate add-ons that decorate areas or blocks within areas or restructure a page. As a simple example, an add-on could force an area to render hidden and then show it later, thus overcoming 'Flash of unstyled content'. I also have in mind many more involved possibilities involving restructuring an area as it renders.