Add a comment, move code to a block

src/one-body-sample.cc

@@ -238,7 +238,6 @@ int main(int argc, char *argv[]) {
       stiffnessMatrix.mmv(u3, b3);
 
       // {{{ Assemble terms for the nonlinearity
-
       std::vector<double> mu;
       mu.resize(grid.size(grid.maxLevel(), dim));
       std::fill(mu.begin(), mu.end(),
@@ -292,6 +291,7 @@ int main(int argc, char *argv[]) {
 
       u1 += u1_diff_new;
 
+      { // Compute von Mises stress and write everything to a file
         auto *displacement =
             new BasisGridFunction<P1Basis, VectorType>(p1Basis, u1);
         VonMisesStressAssembler<GridType> localStressAssembler(E, nu,
@@ -299,7 +299,6 @@ int main(int argc, char *argv[]) {
         FunctionalAssembler<P0Basis>(p0Basis)
             .assemble(localStressAssembler, vonMisesStress, true);
 
-      {
         Dune::VTKWriter<GridType::LeafGridView> writer(leafView);
         std::string filename((boost::format("obs%d") % run).str());
         Dune::shared_ptr<VTKBasisGridFunction<P1Basis, VectorType>>