The View pane, the left side of any document window tab, shows one of 8 possible views. Some views have settings that are view-specific and can only be set via a Setting dialog (e.g. Map Settings) accesses via the 'i' icon on the active tab label
Historically Map/Chart/Outline/Treemap were the original views. Then followed: Timeline (v5.6.0), Attribute Browser (v6.0.0), Hyperbolic view (v7.0.0), Crosstabs (v8.0.0). Generally the Attribute Browser and later view store the view configuration in the TBX file as part of their current tab. To save-re-use tabs after they are closed, save the tab in the tab-gallery.
These are the current views available: