title: Extend output of git log
body: <p>I did</p>
  <pre><code>git log --graph --all -10
  </code></pre>
  <p>in a command line terminal, i.e. listed the last 10 commits. When I reached the end of the listed commits, I realized I want to see more, say I want to extend the output of <code>git log</code> by 5 more commits. Is this possible interactively, or is it mandatory I quit the current <code>git log</code> and do a new <code>git log --graph --all -15</code>?</p>