Fix description.

git-svn-id: https://svn.dealii.org/trunk@23098 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/examples/step-38/doc/results.dox b/deal.II/examples/step-38/doc/results.dox
index f5c37600da92eb7b736706f9f9f064115921c580..5dffab08eef7eaa1340a22c621029ccf52fab375 100644 (file)
--- a/deal.II/examples/step-38/doc/results.dox
+++ b/deal.II/examples/step-38/doc/results.dox
@@ -46,7 +46,9 @@ so:
 @endcode
 The domain is a curve in 2d, and we can visualize the solution by using the
 third dimension (and color) to denote the value of the function $u(x)$. This
-then looks like so:
+then looks like so (the white curve is the domain, the colored curve is the
+solution extruded into the third dimension, clearly showing the change in sign
+as the curve moves from one quadrant of the domain into the adjacent one):
 
 @image html step-38.solution-2d.png