The Content Pane is where you select elements to build a panel configuration. Element is the term for any item found in the Content pane. Depending on the catalog, elements include base panels, stacking panels, tiles, doors, base raceway covers and other parts needed to completely specify a Panel Builder configuration.
Much of the layout of the Content Pane depends on the nature of the catalog; a catalog that does not have doors does not have a folder for doors. A Panel Builder catalog can have as many or as few folders and folder levels as the manufacturer decides.
The Content Pane in Panel Builder is separate from the Content tab in Cap Explorer. It is designed to present the available elements in a logical and intuitive manner. At the bottom level of the navigation path of the Content Pane are the actual class instances (elements) that can be placed into the Panel Configuration Pane.