Can you help I tried docking undocking the task pane but I cannot get the hide button to show.
Do you mean the Task Pane option is not available in the View >Toolbars menu?
Or do you mean the Thumbtack icon atop the Task Pane?
the little tab that allow you to collapse the pane to the right
There is no tab. You have it pinned down by the push pin in the upper right corner.
Also if it is the arrows you are looking for those are hidden until you drag the task pane
out. Then depending on the quadrant you want depends on which arrows show up.
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