Page hierarchy
The main document is labeled LN UI document. It contains a region for the main navigation and a region with the main content. The main navigation region contains the application navigation tree and the session navigation tabs, which are explained in the next sections.
The main content region usually contains one or more session toolbars, forms, and grids. Session toolbars contain quick actions that apply to the currently visible session, usually represented as regular or menu buttons. Forms usually contain regions with grouped input controls that you can navigate with the virtual cursor. The cells in a grid can also contain editable controls.