The image shows the hierarchy of components on a page in a tree structure. The page, Document.jspx, is at the top of the tree. The page has two components, Component1 and Component2, and a task flow region, Region3. Region3 is defined by a page fragment, region3.jsff, containing two components, ComponentA and ComponentB, and a task flow, RegionC. RegionC is defined by a page fragment, regionC.jsff, containing two components, ComponentX and ComponentY.