diff --git a/src/elasticity_solver.jl b/src/elasticity_solver.jl
index 1283260..5386d2e 100644
--- a/src/elasticity_solver.jl
+++ b/src/elasticity_solver.jl
@@ -40,6 +40,7 @@ Examples
 [2.0, 3.0, 4.0]
 """
 function dummy(a)
+  # not doing anything useful.
   return a+1
 end