      <p>This is a line that's suboptimally wrapped
      and all of these lines after it are also
      pre-existing. But the point is that in the
      middle of this suboptimally-wrapped paragraph, a bunch of new text is inserted (RIGHT HERE)
      and the rest of the paragraph is then optimally wrapped to 100 columns. This bifurcates the
      paragraph into two halves, the suboptimal half before the insertions, and the optimal half
      AFTER them.</p>
      <p>This is a line that's suboptimally wrapped
      and all of these lines after it are also
      pre-existing. But the point is that in the
      middle of this suboptimally-wrapped paragraph, a bunch of new text is inserted (RIGHT HERE
      RIGHT HERE RIGHT HERE RIGHT HERE RIGHT HERE RIGHT HERE) and the rest of the paragraph is then
      optimally wrapped to 100 columns. This bifurcates the paragraph into two halves, the
      suboptimal half before the insertions, and the optimal half AFTER them.</p>

      <p>This is a line that's suboptimally wrapped
      and all of these lines after it are also
      pre-existing. But the point is that in the
      middle of this suboptimally-wrapped paragraph, a bunch of new text is inserted (RIGHT HERE
      RIGHT HERE RIGHT HERE) and the rest of the paragraph is then optimally wrapped to 100 columns.
      This bifurcates the paragraph into two halves, the suboptimal half before the insertions, and
      the optimal half AFTER them.</p>