page. Pressing control and return jumps back to the page before the
last jump.</li>
</ul>

<p>The <em>scale factor</em> can be changed by entering the desired percentage
into the text field in the view tool bar, which can be focused using Ctrl+L,
and pressing the return key.</p>

<h4><a name="tabs">Tabs</a> <a href="#top">&uarr;</a></h4>

<ul>
    <li><b>Previous/Next tab</b> Makes the previous/next tab the current tab. Cycles
to the last/first tab if the first/last tab is the current tab.</li>
    <li><b>C