diff --git a/src/demeter/common/utils.hpp b/src/demeter/common/utils.hpp
index 34f0500..47c0411 100644
--- a/src/demeter/common/utils.hpp
+++ b/src/demeter/common/utils.hpp
@@ -13,4 +13,13 @@ namespace Demeter {
 
 void CheckOpenMP();
 
+// auto watch =
+//     [&](std::vector<std::variant<std::reference_wrapper<Material>,
+//                                  std::reference_wrapper<Cell>,
+//                                  std::reference_wrapper<Lattice>>>&& vec) {
+//       for (const auto& v : vec) {
+//         std::visit([](auto&& v) { std::cout << v.get() << std::endl; }, v);
+//       }
+//     };
+
 }  // namespace Demeter
diff --git a/src/demeter/model/lattice.cpp b/src/demeter/model/lattice.cpp
index 7d8ae62..313dd30 100644
--- a/src/demeter/model/lattice.cpp
+++ b/src/demeter/model/lattice.cpp
@@ -4,10 +4,8 @@ namespace Demeter {
 std::string Lattice::print() const {
   std::ostringstream s;
   s << "Lattice:" << name_ << "\n";
-  // if cell, print the cells, else print the cells inside the lattices
-  
+  // print names in a matrix view
   // for (const auto& c : components_) {
-  //   s += c.get().print(false);
   // }
   return s.str();
 }
diff --git a/src/demeter/model/lattice.hpp b/src/demeter/model/lattice.hpp
index 7e2809e..977396d 100644
--- a/src/demeter/model/lattice.hpp
+++ b/src/demeter/model/lattice.hpp
@@ -25,6 +25,8 @@ class Lattice {
   }
   std::string print() const;
 
+  std::string_view name() const { return name_; }
+
  private:
   std::vector<FillType> components_;  // TODO use matrix