It would be useful to have keyboard shortcuts for the buttons that control the sidebar that displays the content outline in the PDF Viewer. As far as I know, no such shortcuts exist. I like to save space, but I am not a fan of presentation mode so I find myself constantly clicking the toggle button to show/hide the sidebar. Also, for some reason many of my pdfs open with the content outline fully expanded. For documents with a lot of headings and sub-headings, this can make scrolling to a specific heading in the side bar a pain in the ass. So I am also frequently clicking the content outline toggle button. One last shortcut that would be helpful would be one that focuses/highlights the first heading directly, then you could just navigate with the keys from there to each subsequent heading. The only way I know to do this currently is to hit the tab button about 20 times to cycle the focus through all of the buttons/fields that come before the sidebar.
