"Video Pane" commands
Primary Video Pane Maximized
This command hides or shows assistant and controller panels.
A checkmark appears next to the menu item when the primary video panel is maximized.
Assistant Video Pane
Use this command to show or hide assistant video panel.A checkmark appears next to the menu item when the assistant video panel is shown.
Controller pane
Use this command to show or hide controller panel.A checkmark appears next to the menu item when the controller video panel is shown.
These commands also available in the pop up menu of a Browser window .
First 3 buttons of the "View" toolbar corresponds to these commands too.