Fix a typo. Add a sentence.

git-svn-id: https://svn.dealii.org/trunk@16187 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/examples/step-16/doc/results.dox b/deal.II/examples/step-16/doc/results.dox
index a002871ecd785c57046ce05e3af37b4caf02c5a2..3ebff138dc11ac9376de3e17c6a33ca9e119a21b 100644 (file)
--- a/deal.II/examples/step-16/doc/results.dox
+++ b/deal.II/examples/step-16/doc/results.dox
@@ -11,7 +11,10 @@ refer to the graphical output there. The only difference between the two is the
 <tr><td>5120</td> <td>95</td> <td>9</td> </tr>
 <tr><td>20480</td><td>182</td><td>10</td></tr>
 </table>
-Therefore, whenever possible, mutligrid methods should be used for second order problems.
+This isn't only less iterations than in @ref step_5 "step-5" (each of which
+is, however, much more expensive) but more importantly, the number of
+iterations stays roughly constant under mesh refinement.  Therefore, whenever
+possible, multigrid methods should be used for second order problems.
 
 
 The output produced by this program is the following: