Index: vbtol/source/vbutils.cpp
===================================================================
--- vbtol/source/vbutils.cpp	(revision 6d7779d88a35f4606432b88f2eceba8b66c4516b)
+++ vbtol/source/vbutils.cpp	(revision e58c684cc17be1a04af5adc2bf0f8bf38fcae1ba)
@@ -40,4 +40,24 @@
 }
 
+/*
+  
+*/
+
+BList VB_stack;
+
+void VB_concat(BList* head, BList* tail)
+{
+  if (head->Cdr()) {
+    VB_concat(head->Cdr(), tail);
+  }
+  else {
+    head->PutCdr(tail);
+  }
+}
+
+/*
+  
+*/
+
 FN_PTR VB_Writer = NULL;