/b> Always toggles the
visibility of the tool and menu bars when toggling fullscreen mode.</li>
    <li><b>Use page label</b> Determines if document-supplied page label will be
used instead of page numbers when available.</li>
    <li><b>Document title as tab title</b> Determines if the tab title as derived
from the meta-data instead of the file name.</li>
    <li><b>Current page in window title</b> If enabled, the current page and number
of pages of the document in the active tab are displayed in the windo