diff --git a/src/Rules.cpp b/src/Rules.cpp
index 69b7c785..e2daedb3 100644
--- a/src/Rules.cpp
+++ b/src/Rules.cpp
@@ -28,6 +28,14 @@
 #include <Rules.h>
 #include <sstream>
 
+////////////////////////////////////////////////////////////////////////////////
+// define r:
+//    name value
+std::string Rules::get (const std::string& rule, const std::string& name) const
+{
+  return ""; // TODO Replace
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 std::string Rules::dump () const
 {
diff --git a/src/Rules.h b/src/Rules.h
index 7766918b..beb441ce 100644
--- a/src/Rules.h
+++ b/src/Rules.h
@@ -33,7 +33,10 @@ class Rules
 {
 public:
   Rules () = default;
+  std::string get (const std::string&, const std::string&) const;
   std::string dump () const;
+
+private:
 };
 
 #endif