This graphic shows the "Surf Articles" parent definition and how this parent asset is designated as the parent of the "Shark Parks" Article asset (because it is specified in the Article asset's "Category" field). The Content Tree reflects this hierarchical relationship. "Surf Articles" is a node on the tree and "Shark Parks" falls inside of it as a child. Double-click a parent asset in the Content Tree to display its children in a "Browse" tab (as shown in this graphic).