When AutoSwitch is set to true (the default value), pressing the arrow keys automatically switches panes. Pressing the tab key selects the next element in the panes sequence, which excludes non-selected pane headers. When AutoSwitch is set to false, pressing the arrow keys or the tab key moves the focus to the next or previous pane header, but does not switch panes. Pressing the Enter or Space keys is required to activate the pane that has the focus.