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A Pane's Option Menu can be accessed by clicking on the pane_options_button, in the corner of the Pane (Tab) Group closest to the Viewport when that Pane is the selected (or “active”) one in that Pane Group. It can also be accessed by right clicking on the Tab containing the Pane's label, in the pane_group_tab_bar - even while that Pane is not the active one in the Pane Group.
Below is a list of interface elements that can cause a Pane Option Menu to be displayed:
Below is a list of interface elements that exist within a Pane Option Menu: