diff --git a/grenzen-working.dat b/grenzen-working.dat
new file mode 100644
index 0000000..dc62aa2
--- /dev/null
+++ b/grenzen-working.dat
@@ -0,0 +1,61 @@
+param minwert:=
+Calories 2751
+Carbs 344
+Protein 138
+Fat 92
+Omega-3 5.67
+Omega-6 17
+Fiber 30
+Cholesterol 0
+VitaminA 3333
+VitaminB6 1.5
+#VitaminB12 3 #cannot hold
+VitaminC 100
+#VitaminD 800 #cannot hold
+VitaminE 20.86
+VitaminK 120
+Thiamin 1.2
+Riboflavin 1.4
+Niacin 16
+Folate 400
+PantothenicAcid 6
+#Choline 1220 #not in swiss data
+Calcium 1
+Chloride 2.3
+#Chromium 65 #not in swiss data
+#Copper 1.25 #not in swiss data
+#Iodine 200
+Iron 14
+Magnesium 420
+#Manganese 3.5 #not in swiss data
+#Molybdenum 75 #not in swiss data
+Phosphorus 0.7
+Potassium 3.5
+#Selenium 55 #cannot hold
+Sodium 1.5
+#Sulfur 2  #not in swiss data
+Zinc 11;
+
+param maxwert:=
+VitaminA 10000
+VitaminB6 100
+VitaminC 2000
+VitaminD 4000
+#VitaminE 1000 #cannot hold
+Omega-3 20
+Niacin 35
+#Folate 1000 #cannot hold
+Choline 3500
+Calcium 2.5
+Chloride 3.6
+#Copper 10 #not in swiss data
+Iodine 1100
+Iron 45
+#Manganese 11 #not in swiss data
+#Molybdenum 2000 #not in swiss data
+Phosphorus 4
+Selenium 400
+Sodium 2.3;
+#Zinc 40;#cannot hold
+
+
diff --git a/grenzen.dat b/grenzen.dat
index dc62aa2..dcb824b 100644
--- a/grenzen.dat
+++ b/grenzen.dat
@@ -1,61 +1,3 @@
-param minwert:=
-Calories 2751
-Carbs 344
-Protein 138
-Fat 92
-Omega-3 5.67
-Omega-6 17
-Fiber 30
-Cholesterol 0
-VitaminA 3333
-VitaminB6 1.5
-#VitaminB12 3 #cannot hold
-VitaminC 100
-#VitaminD 800 #cannot hold
-VitaminE 20.86
-VitaminK 120
-Thiamin 1.2
-Riboflavin 1.4
-Niacin 16
-Folate 400
-PantothenicAcid 6
-#Choline 1220 #not in swiss data
-Calcium 1
-Chloride 2.3
-#Chromium 65 #not in swiss data
-#Copper 1.25 #not in swiss data
-#Iodine 200
-Iron 14
-Magnesium 420
-#Manganese 3.5 #not in swiss data
-#Molybdenum 75 #not in swiss data
-Phosphorus 0.7
-Potassium 3.5
-#Selenium 55 #cannot hold
-Sodium 1.5
-#Sulfur 2  #not in swiss data
-Zinc 11;
-
-param maxwert:=
-VitaminA 10000
-VitaminB6 100
-VitaminC 2000
-VitaminD 4000
-#VitaminE 1000 #cannot hold
-Omega-3 20
-Niacin 35
-#Folate 1000 #cannot hold
-Choline 3500
-Calcium 2.5
-Chloride 3.6
-#Copper 10 #not in swiss data
-Iodine 1100
-Iron 45
-#Manganese 11 #not in swiss data
-#Molybdenum 2000 #not in swiss data
-Phosphorus 4
-Selenium 400
-Sodium 2.3;
-#Zinc 40;#cannot hold
-
-
+#include grenzen-working.dat
+include grenzen-orig.dat
+#exactly one line should be valid, all others commented