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diff --git a/src/stlplus/persistence/persistent_foursome.tpp b/src/stlplus/persistence/persistent_foursome.tpp
new file mode 100644
index 0000000..cfcf6ae
--- /dev/null
+++ b/src/stlplus/persistence/persistent_foursome.tpp
@@ -0,0 +1,39 @@
+////////////////////////////////////////////////////////////////////////////////
+
+//   Author:    Andy Rushton
+//   Copyright: (c) Southampton University 1999-2004
+//              (c) Andy Rushton           2004-2009
+//   License:   BSD License, see ../docs/license.html
+
+////////////////////////////////////////////////////////////////////////////////
+
+namespace stlplus
+{
+
+  ////////////////////////////////////////////////////////////////////////////////
+
+  template<typename T1, typename T2, typename T3, typename T4, typename D1, typename D2, typename D3, typename D4>
+  void dump_foursome(dump_context& context, const foursome<T1,T2,T3,T4>& data, 
+                     D1 dump_fn1, D2 dump_fn2, D3 dump_fn3, D4 dump_fn4)
+    throw(persistent_dump_failed)
+  {
+    dump_fn1(context,data.first);
+    dump_fn2(context,data.second);
+    dump_fn3(context,data.third);
+    dump_fn4(context,data.fourth);
+  }
+
+  template<typename T1, typename T2, typename T3, typename T4, typename R1, typename R2, typename R3, typename R4>
+  void restore_foursome(restore_context& context, foursome<T1,T2,T3,T4>& data,
+                        R1 restore_fn1, R2 restore_fn2, R3 restore_fn3, R4 restore_fn4)
+    throw(persistent_restore_failed)
+  {
+    restore_fn1(context,data.first);
+    restore_fn2(context,data.second);
+    restore_fn3(context,data.third);
+    restore_fn4(context,data.fourth);
+  }
+
+  ////////////////////////////////////////////////////////////////////////////////
+
+} // end namespace stlplus