diff --git a/Assets/Fungus/Scripts/Commands/Math/Abs.cs b/Assets/Fungus/Scripts/Commands/Math/Abs.cs
index 8b9bc27e..0859907b 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Abs.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Abs.cs
@@ -17,10 +17,5 @@ namespace Fungus
 
             Continue();
         }
-
-        public override string GetSummary()
-        {
-            return "Abs";
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/BaseUnaryMathCommand.cs b/Assets/Fungus/Scripts/Commands/Math/BaseUnaryMathCommand.cs
index 253d834e..4a59709b 100644
--- a/Assets/Fungus/Scripts/Commands/Math/BaseUnaryMathCommand.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/BaseUnaryMathCommand.cs
@@ -21,5 +21,15 @@ namespace Fungus
             return new Color32(235, 191, 217, 255);
         }
 
+        public override string GetSummary()
+        {
+            return "in: " + (inValue.floatRef != null ? inValue.floatRef.Key : inValue.Value.ToString()) + 
+                   ", out: " + (outValue.floatRef != null ? outValue.floatRef.Key : outValue.Value.ToString());
+        }
+
+        public override bool HasReference(Variable variable)
+        {
+            return variable == inValue.floatRef || variable == outValue.floatRef;
+        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Clamp.cs b/Assets/Fungus/Scripts/Commands/Math/Clamp.cs
index 75ce2934..181e3bf5 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Clamp.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Clamp.cs
@@ -55,7 +55,16 @@ namespace Fungus
 
         public override string GetSummary()
         {
-            return Mode.Clamp.ToString() + (mode != Mode.Clamp ? " & " + mode.ToString() : "");
+            if (outValue.floatRef == null)
+                return "Error: no output value selected";
+
+            return outValue.floatRef.Key + " = " + Mode.Clamp.ToString() + (mode != Mode.Clamp ? " & " + mode.ToString() : "");
+        }
+
+        public override bool HasReference(Variable variable)
+        {
+            return lower.floatRef == variable || upper.floatRef == variable || value.floatRef == variable ||
+                   outValue.floatRef == variable;
         }
 
         public override Color GetButtonColor()
diff --git a/Assets/Fungus/Scripts/Commands/Math/Curve.cs b/Assets/Fungus/Scripts/Commands/Math/Curve.cs
index 69c8d76a..9d15bece 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Curve.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Curve.cs
@@ -20,10 +20,5 @@ namespace Fungus
 
             Continue();
         }
-
-        public override string GetSummary()
-        {
-            return "Curve";
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Exp.cs b/Assets/Fungus/Scripts/Commands/Math/Exp.cs
index 6e5c4723..5489c1a6 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Exp.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Exp.cs
@@ -17,10 +17,5 @@ namespace Fungus
 
             Continue();
         }
-
-        public override string GetSummary()
-        {
-            return "Exp";
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Inv.cs b/Assets/Fungus/Scripts/Commands/Math/Inv.cs
index fcd6a5d3..029761c3 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Inv.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Inv.cs
@@ -19,10 +19,5 @@ namespace Fungus
 
             Continue();
         }
-
-        public override string GetSummary()
-        {
-            return "Inverse 1/f";
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/InvLerp.cs b/Assets/Fungus/Scripts/Commands/Math/InvLerp.cs
index a593dc0d..a0f86c83 100644
--- a/Assets/Fungus/Scripts/Commands/Math/InvLerp.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/InvLerp.cs
@@ -35,7 +35,16 @@ namespace Fungus
 
         public override string GetSummary()
         {
-            return "InvLerp [" + a.Value.ToString() + "-" + b.Value.ToString() + "]";
+            if (outValue.floatRef == null)
+                return "Error: no out value selected";
+
+            return outValue.floatRef.Key + " = [" + a.Value.ToString() + "-" + b.Value.ToString() + "]";
+        }
+
+        public override bool HasReference(Variable variable)
+        {
+            return a.floatRef == variable || b.floatRef == variable || value.floatRef == variable ||
+                   outValue.floatRef == variable;
         }
 
         public override Color GetButtonColor()
diff --git a/Assets/Fungus/Scripts/Commands/Math/Lerp.cs b/Assets/Fungus/Scripts/Commands/Math/Lerp.cs
index 5caedf46..e98055ae 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Lerp.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Lerp.cs
@@ -54,6 +54,12 @@ namespace Fungus
             return mode.ToString() + " [" + a.Value.ToString() + "-" + b.Value.ToString() + "]";
         }
 
+        public override bool HasReference(Variable variable)
+        {
+            return a.floatRef == variable || b.floatRef == variable || percentage.floatRef == variable ||
+                   outValue.floatRef == variable;
+        }
+
         public override Color GetButtonColor()
         {
             return new Color32(235, 191, 217, 255);
diff --git a/Assets/Fungus/Scripts/Commands/Math/Log.cs b/Assets/Fungus/Scripts/Commands/Math/Log.cs
index 2c7da4bb..8875f974 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Log.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Log.cs
@@ -40,17 +40,7 @@ namespace Fungus
 
         public override string GetSummary()
         {
-            switch (mode)
-            {
-                case Mode.Base10:
-                    return "Log Base 10";
-                case Mode.Natural:
-                    return "Natural Log";
-                default:
-                    break;
-            }
-
-            return "Log";
+            return mode.ToString() + " " + base.GetSummary();
         }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Map.cs b/Assets/Fungus/Scripts/Commands/Math/Map.cs
index 61f7fb23..3f653ad4 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Map.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Map.cs
@@ -40,6 +40,13 @@ namespace Fungus
                 newRangeLower.Value.ToString() + "-" + newRangeUpper.Value.ToString() + "]";
         }
 
+        public override bool HasReference(Variable variable)
+        {
+            return initialRangeLower.floatRef == variable || initialRangeUpper.floatRef == variable || value.floatRef == variable ||
+                   newRangeLower.floatRef == variable || newRangeUpper.floatRef == variable ||
+                   outValue.floatRef == variable;
+        }
+
         public override Color GetButtonColor()
         {
             return new Color32(235, 191, 217, 255);
diff --git a/Assets/Fungus/Scripts/Commands/Math/MinMax.cs b/Assets/Fungus/Scripts/Commands/Math/MinMax.cs
index 9efeb0a0..7294454f 100644
--- a/Assets/Fungus/Scripts/Commands/Math/MinMax.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/MinMax.cs
@@ -43,19 +43,24 @@ namespace Fungus
                     break;
             }
 
-
             Continue();
         }
 
         public override string GetSummary()
         {
-            return function.ToString();
+            return function.ToString() + " " +
+                "out: " + (outValue.floatRef != null ? outValue.floatRef.Key : outValue.Value.ToString()) +
+                " [" + inLHSValue.Value.ToString() + " - " + inRHSValue.Value.ToString() + "]";
+        }
+
+        public override bool HasReference(Variable variable)
+        {
+            return inLHSValue.floatRef == variable || inRHSValue.floatRef == variable || outValue.floatRef == variable;
         }
 
         public override Color GetButtonColor()
         {
             return new Color32(235, 191, 217, 255);
         }
-
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Neg.cs b/Assets/Fungus/Scripts/Commands/Math/Neg.cs
index 883ef7de..1f063868 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Neg.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Neg.cs
@@ -17,10 +17,5 @@ namespace Fungus
 
             Continue();
         }
-
-        public override string GetSummary()
-        {
-            return "Negate";
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Pow.cs b/Assets/Fungus/Scripts/Commands/Math/Pow.cs
index e20db290..586c43c5 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Pow.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Pow.cs
@@ -27,7 +27,10 @@ namespace Fungus
 
         public override string GetSummary()
         {
-            return "Pow";
+            if (outValue.floatRef == null)
+                return "Error: No out value selected";
+
+            return outValue.floatRef.Key + " = " + baseValue.Value.ToString() + "^" + exponentValue.Value.ToString();
         }
 
         public override Color GetButtonColor()
@@ -35,5 +38,10 @@ namespace Fungus
             return new Color32(235, 191, 217, 255);
         }
 
+        public override bool HasReference(Variable variable)
+        {
+            return baseValue.floatRef == variable || exponentValue.floatRef == variable ||
+                   outValue.floatRef == variable;
+        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Round.cs b/Assets/Fungus/Scripts/Commands/Math/Round.cs
index 418893f7..d7ddc301 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Round.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Round.cs
@@ -44,7 +44,7 @@ namespace Fungus
 
         public override string GetSummary()
         {
-            return function.ToString();
+            return function.ToString() + " " + base.GetSummary();
         }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Sign.cs b/Assets/Fungus/Scripts/Commands/Math/Sign.cs
index d3b3ebb9..89fea7b8 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Sign.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Sign.cs
@@ -17,10 +17,5 @@ namespace Fungus
 
             Continue();
         }
-
-        public override string GetSummary()
-        {
-            return "Sign";
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Sqrt.cs b/Assets/Fungus/Scripts/Commands/Math/Sqrt.cs
index 57500efe..d8e9485c 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Sqrt.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Sqrt.cs
@@ -17,10 +17,5 @@ namespace Fungus
 
             Continue();
         }
-
-        public override string GetSummary()
-        {
-            return "Sqrt";
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/ToInt.cs b/Assets/Fungus/Scripts/Commands/Math/ToInt.cs
index e4a15b24..cf8596ca 100644
--- a/Assets/Fungus/Scripts/Commands/Math/ToInt.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/ToInt.cs
@@ -35,17 +35,17 @@ namespace Fungus
         {
             switch (function)
             {
-                case Mode.RoundToInt:
-                    outValue.Value = Mathf.RoundToInt(inValue.Value);
-                    break;
-                case Mode.FloorToInt:
-                    outValue.Value = Mathf.FloorToInt(inValue.Value);
-                    break;
-                case Mode.CeilToInt:
-                    outValue.Value = Mathf.CeilToInt(inValue.Value);
-                    break;
-                default:
-                    break;
+            case Mode.RoundToInt:
+                outValue.Value = Mathf.RoundToInt(inValue.Value);
+                break;
+            case Mode.FloorToInt:
+                outValue.Value = Mathf.FloorToInt(inValue.Value);
+                break;
+            case Mode.CeilToInt:
+                outValue.Value = Mathf.CeilToInt(inValue.Value);
+                break;
+            default:
+                break;
             }
 
             Continue();
@@ -53,7 +53,9 @@ namespace Fungus
 
         public override string GetSummary()
         {
-            return function.ToString();
+            return function.ToString() + 
+                   " in: " + (inValue.floatRef != null ? inValue.floatRef.Key : inValue.Value.ToString()) + 
+                   ", out: " + (outValue.integerRef != null ? outValue.integerRef.Key : outValue.Value.ToString()); ;
         }
 
         public override Color GetButtonColor()
@@ -61,5 +63,9 @@ namespace Fungus
             return new Color32(235, 191, 217, 255);
         }
 
+        public override bool HasReference(Variable variable)
+        {
+            return variable == inValue.floatRef || variable == outValue.integerRef;
+        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Fungus/Scripts/Commands/Math/Trig.cs b/Assets/Fungus/Scripts/Commands/Math/Trig.cs
index 998cf902..2ef5b78a 100644
--- a/Assets/Fungus/Scripts/Commands/Math/Trig.cs
+++ b/Assets/Fungus/Scripts/Commands/Math/Trig.cs
@@ -22,8 +22,7 @@ namespace Fungus
             Sin,
             Tan
         }
-
-
+        
         [Tooltip("Trigonometric function to run.")]
         [SerializeField]
         protected Function function = Function.Sin;
@@ -65,13 +64,7 @@ namespace Fungus
 
         public override string GetSummary()
         {
-            return function.ToString();
+            return function.ToString() + " " + base.GetSummary();
         }
-
-        public override Color GetButtonColor()
-        {
-            return new Color32(235, 191, 217, 255);
-        }
-
     }
 }
\ No newline at end of file