Merge and fix write button

19 files changed, 416 insertions, 146 deletions

diff --git a/grapher/Form1.Designer.cs b/grapher/Form1.Designer.cs
index 1950f51..8d7bfd8 100644
--- a/grapher/Form1.Designer.cs
+++ b/grapher/Form1.Designer.cs
@@ -84,7 +84,7 @@ namespace grapher
             this.weightLabelX = new System.Windows.Forms.Label();
             this.weightBoxY = new System.Windows.Forms.TextBox();
             this.limitBoxX = new System.Windows.Forms.TextBox();
-            this.constantTwoLabelX = new System.Windows.Forms.Label();
+            this.limitLabelX = new System.Windows.Forms.Label();
             this.midpointBoxX = new System.Windows.Forms.TextBox();
             this.constantThreeLabelX = new System.Windows.Forms.Label();
             this.offsetBoxX = new System.Windows.Forms.TextBox();
@@ -133,7 +133,7 @@ namespace grapher
             this.WeightActiveYLabel = new System.Windows.Forms.Label();
             this.CapActiveYLabel = new System.Windows.Forms.Label();
             this.OffsetActiveXLabel = new System.Windows.Forms.Label();
-            this.LimitExpActiveXLabel = new System.Windows.Forms.Label();
+            this.LimitActiveXLabel = new System.Windows.Forms.Label();
             this.MidpointActiveXLabel = new System.Windows.Forms.Label();
             this.accelerationBoxY = new System.Windows.Forms.TextBox();
             this.offsetBoxY = new System.Windows.Forms.TextBox();
@@ -142,19 +142,31 @@ namespace grapher
             this.accelTypeDropY = new System.Windows.Forms.ComboBox();
             this.AccelerationActiveLabelY = new System.Windows.Forms.Label();
             this.OffsetActiveYLabel = new System.Windows.Forms.Label();
-            this.LimitExpActiveYLabel = new System.Windows.Forms.Label();
+            this.LimitActiveYLabel = new System.Windows.Forms.Label();
             this.MidpointActiveYLabel = new System.Windows.Forms.Label();
             this.ByComponentXYLock = new System.Windows.Forms.CheckBox();
             this.constantOneLabelY = new System.Windows.Forms.Label();
             this.capLabelY = new System.Windows.Forms.Label();
             this.weightLabelY = new System.Windows.Forms.Label();
             this.offsetLabelY = new System.Windows.Forms.Label();
-            this.constantTwoLabelY = new System.Windows.Forms.Label();
+            this.limitLabelY = new System.Windows.Forms.Label();
             this.constantThreeLabelY = new System.Windows.Forms.Label();
             this.OptionSetXTitle = new System.Windows.Forms.Label();
             this.OptionSetYTitle = new System.Windows.Forms.Label();
             this.AccelTypeActiveLabelY = new System.Windows.Forms.Label();
             this.ActiveValueTitleY = new System.Windows.Forms.Label();
+            this.expLabelY = new System.Windows.Forms.Label();
+            this.ExpActiveYLabel = new System.Windows.Forms.Label();
+            this.expBoxY = new System.Windows.Forms.TextBox();
+            this.ExpActiveXLabel = new System.Windows.Forms.Label();
+            this.expLabelX = new System.Windows.Forms.Label();
+            this.expBoxX = new System.Windows.Forms.TextBox();
+            this.scaleLabelY = new System.Windows.Forms.Label();
+            this.ScaleActiveYLabel = new System.Windows.Forms.Label();
+            this.scaleBoxY = new System.Windows.Forms.TextBox();
+            this.ScaleActiveXLabel = new System.Windows.Forms.Label();
+            this.scaleLabelX = new System.Windows.Forms.Label();
+            this.scaleBoxX = new System.Windows.Forms.TextBox();
             ((System.ComponentModel.ISupportInitialize)(this.AccelerationChart)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.VelocityChart)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.GainChart)).BeginInit();
@@ -311,19 +323,19 @@ namespace grapher
             this.limitBoxX.Size = new System.Drawing.Size(76, 20);
             this.limitBoxX.TabIndex = 9;
             // 
-            // constantTwoLabelX
+            // limitLabelX
             // 
-            this.constantTwoLabelX.AutoSize = true;
-            this.constantTwoLabelX.Location = new System.Drawing.Point(24, 244);
-            this.constantTwoLabelX.Name = "constantTwoLabelX";
-            this.constantTwoLabelX.Size = new System.Drawing.Size(78, 13);
-            this.constantTwoLabelX.TabIndex = 16;
-            this.constantTwoLabelX.Text = "Limit/Exponent";
-            this.constantTwoLabelX.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
+            this.limitLabelX.AutoSize = true;
+            this.limitLabelX.Location = new System.Drawing.Point(24, 244);
+            this.limitLabelX.Name = "limitLabelX";
+            this.limitLabelX.Size = new System.Drawing.Size(28, 13);
+            this.limitLabelX.TabIndex = 16;
+            this.limitLabelX.Text = "Limit";
+            this.limitLabelX.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
             // 
             // midpointBoxX
             // 
-            this.midpointBoxX.Location = new System.Drawing.Point(105, 267);
+            this.midpointBoxX.Location = new System.Drawing.Point(105, 297);
             this.midpointBoxX.Name = "midpointBoxX";
             this.midpointBoxX.Size = new System.Drawing.Size(76, 20);
             this.midpointBoxX.TabIndex = 10;
@@ -331,7 +343,7 @@ namespace grapher
             // constantThreeLabelX
             // 
             this.constantThreeLabelX.AutoSize = true;
-            this.constantThreeLabelX.Location = new System.Drawing.Point(34, 270);
+            this.constantThreeLabelX.Location = new System.Drawing.Point(34, 300);
             this.constantThreeLabelX.Name = "constantThreeLabelX";
             this.constantThreeLabelX.Size = new System.Drawing.Size(47, 13);
             this.constantThreeLabelX.TabIndex = 18;
@@ -357,9 +369,10 @@ namespace grapher
             // 
             // writeButton
             // 
-            this.writeButton.Location = new System.Drawing.Point(154, 270);
+            this.writeButton.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F);
+            this.writeButton.Location = new System.Drawing.Point(177, 359);
             this.writeButton.Name = "writeButton";
-            this.writeButton.Size = new System.Drawing.Size(76, 23);
+            this.writeButton.Size = new System.Drawing.Size(128, 40);
             this.writeButton.TabIndex = 19;
             this.writeButton.Text = "Apply";
             this.writeButton.UseVisualStyleBackColor = true;
@@ -875,19 +888,19 @@ namespace grapher
             this.OffsetActiveXLabel.TabIndex = 45;
             this.OffsetActiveXLabel.Text = "0";
             // 
-            // LimitExpActiveXLabel
+            // LimitActiveXLabel
             // 
-            this.LimitExpActiveXLabel.AutoSize = true;
-            this.LimitExpActiveXLabel.Location = new System.Drawing.Point(196, 244);
-            this.LimitExpActiveXLabel.Name = "LimitExpActiveXLabel";
-            this.LimitExpActiveXLabel.Size = new System.Drawing.Size(13, 13);
-            this.LimitExpActiveXLabel.TabIndex = 46;
-            this.LimitExpActiveXLabel.Text = "0";
+            this.LimitActiveXLabel.AutoSize = true;
+            this.LimitActiveXLabel.Location = new System.Drawing.Point(196, 244);
+            this.LimitActiveXLabel.Name = "LimitActiveXLabel";
+            this.LimitActiveXLabel.Size = new System.Drawing.Size(13, 13);
+            this.LimitActiveXLabel.TabIndex = 46;
+            this.LimitActiveXLabel.Text = "0";
             // 
             // MidpointActiveXLabel
             // 
             this.MidpointActiveXLabel.AutoSize = true;
-            this.MidpointActiveXLabel.Location = new System.Drawing.Point(196, 270);
+            this.MidpointActiveXLabel.Location = new System.Drawing.Point(196, 300);
             this.MidpointActiveXLabel.Name = "MidpointActiveXLabel";
             this.MidpointActiveXLabel.Size = new System.Drawing.Size(13, 13);
             this.MidpointActiveXLabel.TabIndex = 47;
@@ -916,7 +929,7 @@ namespace grapher
             // 
             // midpointBoxY
             // 
-            this.midpointBoxY.Location = new System.Drawing.Point(331, 267);
+            this.midpointBoxY.Location = new System.Drawing.Point(331, 297);
             this.midpointBoxY.Name = "midpointBoxY";
             this.midpointBoxY.Size = new System.Drawing.Size(76, 20);
             this.midpointBoxY.TabIndex = 18;
@@ -948,19 +961,19 @@ namespace grapher
             this.OffsetActiveYLabel.TabIndex = 54;
             this.OffsetActiveYLabel.Text = "0";
             // 
-            // LimitExpActiveYLabel
+            // LimitActiveYLabel
             // 
-            this.LimitExpActiveYLabel.AutoSize = true;
-            this.LimitExpActiveYLabel.Location = new System.Drawing.Point(413, 244);
-            this.LimitExpActiveYLabel.Name = "LimitExpActiveYLabel";
-            this.LimitExpActiveYLabel.Size = new System.Drawing.Size(13, 13);
-            this.LimitExpActiveYLabel.TabIndex = 55;
-            this.LimitExpActiveYLabel.Text = "0";
+            this.LimitActiveYLabel.AutoSize = true;
+            this.LimitActiveYLabel.Location = new System.Drawing.Point(413, 244);
+            this.LimitActiveYLabel.Name = "LimitActiveYLabel";
+            this.LimitActiveYLabel.Size = new System.Drawing.Size(13, 13);
+            this.LimitActiveYLabel.TabIndex = 55;
+            this.LimitActiveYLabel.Text = "0";
             // 
             // MidpointActiveYLabel
             // 
             this.MidpointActiveYLabel.AutoSize = true;
-            this.MidpointActiveYLabel.Location = new System.Drawing.Point(413, 270);
+            this.MidpointActiveYLabel.Location = new System.Drawing.Point(413, 300);
             this.MidpointActiveYLabel.Name = "MidpointActiveYLabel";
             this.MidpointActiveYLabel.Size = new System.Drawing.Size(13, 13);
             this.MidpointActiveYLabel.TabIndex = 56;
@@ -1013,19 +1026,19 @@ namespace grapher
             this.offsetLabelY.TabIndex = 61;
             this.offsetLabelY.Text = "Offset";
             // 
-            // constantTwoLabelY
+            // limitLabelY
             // 
-            this.constantTwoLabelY.AutoSize = true;
-            this.constantTwoLabelY.Location = new System.Drawing.Point(264, 244);
-            this.constantTwoLabelY.Name = "constantTwoLabelY";
-            this.constantTwoLabelY.Size = new System.Drawing.Size(51, 13);
-            this.constantTwoLabelY.TabIndex = 62;
-            this.constantTwoLabelY.Text = "Limit/Exp";
+            this.limitLabelY.AutoSize = true;
+            this.limitLabelY.Location = new System.Drawing.Point(264, 244);
+            this.limitLabelY.Name = "limitLabelY";
+            this.limitLabelY.Size = new System.Drawing.Size(28, 13);
+            this.limitLabelY.TabIndex = 62;
+            this.limitLabelY.Text = "Limit";
             // 
             // constantThreeLabelY
             // 
             this.constantThreeLabelY.AutoSize = true;
-            this.constantThreeLabelY.Location = new System.Drawing.Point(264, 270);
+            this.constantThreeLabelY.Location = new System.Drawing.Point(264, 300);
             this.constantThreeLabelY.Name = "constantThreeLabelY";
             this.constantThreeLabelY.Size = new System.Drawing.Size(47, 13);
             this.constantThreeLabelY.TabIndex = 63;
@@ -1067,24 +1080,138 @@ namespace grapher
             this.ActiveValueTitleY.TabIndex = 67;
             this.ActiveValueTitleY.Text = "Current";
             // 
+            // expLabelY
+            // 
+            this.expLabelY.AutoSize = true;
+            this.expLabelY.Location = new System.Drawing.Point(264, 273);
+            this.expLabelY.Name = "expLabelY";
+            this.expLabelY.Size = new System.Drawing.Size(52, 13);
+            this.expLabelY.TabIndex = 73;
+            this.expLabelY.Text = "Exponent";
+            // 
+            // ExpActiveYLabel
+            // 
+            this.ExpActiveYLabel.AutoSize = true;
+            this.ExpActiveYLabel.Location = new System.Drawing.Point(413, 273);
+            this.ExpActiveYLabel.Name = "ExpActiveYLabel";
+            this.ExpActiveYLabel.Size = new System.Drawing.Size(13, 13);
+            this.ExpActiveYLabel.TabIndex = 72;
+            this.ExpActiveYLabel.Text = "0";
+            // 
+            // expBoxY
+            // 
+            this.expBoxY.Location = new System.Drawing.Point(331, 270);
+            this.expBoxY.Name = "expBoxY";
+            this.expBoxY.Size = new System.Drawing.Size(76, 20);
+            this.expBoxY.TabIndex = 71;
+            // 
+            // ExpActiveXLabel
+            // 
+            this.ExpActiveXLabel.AutoSize = true;
+            this.ExpActiveXLabel.Location = new System.Drawing.Point(196, 273);
+            this.ExpActiveXLabel.Name = "ExpActiveXLabel";
+            this.ExpActiveXLabel.Size = new System.Drawing.Size(13, 13);
+            this.ExpActiveXLabel.TabIndex = 70;
+            this.ExpActiveXLabel.Text = "0";
+            // 
+            // expLabelX
+            // 
+            this.expLabelX.AutoSize = true;
+            this.expLabelX.Location = new System.Drawing.Point(24, 273);
+            this.expLabelX.Name = "expLabelX";
+            this.expLabelX.Size = new System.Drawing.Size(52, 13);
+            this.expLabelX.TabIndex = 69;
+            this.expLabelX.Text = "Exponent";
+            this.expLabelX.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
+            // 
+            // expBoxX
+            // 
+            this.expBoxX.Location = new System.Drawing.Point(105, 270);
+            this.expBoxX.Name = "expBoxX";
+            this.expBoxX.Size = new System.Drawing.Size(76, 20);
+            this.expBoxX.TabIndex = 68;
+            // 
+            // scaleLabelY
+            // 
+            this.scaleLabelY.AutoSize = true;
+            this.scaleLabelY.Location = new System.Drawing.Point(264, 330);
+            this.scaleLabelY.Name = "scaleLabelY";
+            this.scaleLabelY.Size = new System.Drawing.Size(34, 13);
+            this.scaleLabelY.TabIndex = 79;
+            this.scaleLabelY.Text = "Scale";
+            // 
+            // ScaleActiveYLabel
+            // 
+            this.ScaleActiveYLabel.AutoSize = true;
+            this.ScaleActiveYLabel.Location = new System.Drawing.Point(413, 330);
+            this.ScaleActiveYLabel.Name = "ScaleActiveYLabel";
+            this.ScaleActiveYLabel.Size = new System.Drawing.Size(13, 13);
+            this.ScaleActiveYLabel.TabIndex = 78;
+            this.ScaleActiveYLabel.Text = "0";
+            // 
+            // scaleBoxY
+            // 
+            this.scaleBoxY.Location = new System.Drawing.Point(331, 327);
+            this.scaleBoxY.Name = "scaleBoxY";
+            this.scaleBoxY.Size = new System.Drawing.Size(76, 20);
+            this.scaleBoxY.TabIndex = 77;
+            // 
+            // ScaleActiveXLabel
+            // 
+            this.ScaleActiveXLabel.AutoSize = true;
+            this.ScaleActiveXLabel.Location = new System.Drawing.Point(196, 330);
+            this.ScaleActiveXLabel.Name = "ScaleActiveXLabel";
+            this.ScaleActiveXLabel.Size = new System.Drawing.Size(13, 13);
+            this.ScaleActiveXLabel.TabIndex = 76;
+            this.ScaleActiveXLabel.Text = "0";
+            // 
+            // scaleLabelX
+            // 
+            this.scaleLabelX.AutoSize = true;
+            this.scaleLabelX.Location = new System.Drawing.Point(34, 330);
+            this.scaleLabelX.Name = "scaleLabelX";
+            this.scaleLabelX.Size = new System.Drawing.Size(34, 13);
+            this.scaleLabelX.TabIndex = 75;
+            this.scaleLabelX.Text = "Scale";
+            this.scaleLabelX.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
+            // 
+            // scaleBoxX
+            // 
+            this.scaleBoxX.Location = new System.Drawing.Point(105, 327);
+            this.scaleBoxX.Name = "scaleBoxX";
+            this.scaleBoxX.Size = new System.Drawing.Size(76, 20);
+            this.scaleBoxX.TabIndex = 74;
+            // 
             // RawAcceleration
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(1884, 956);
+            this.Controls.Add(this.scaleLabelY);
+            this.Controls.Add(this.ScaleActiveYLabel);
+            this.Controls.Add(this.scaleBoxY);
+            this.Controls.Add(this.ScaleActiveXLabel);
+            this.Controls.Add(this.scaleLabelX);
+            this.Controls.Add(this.scaleBoxX);
+            this.Controls.Add(this.expLabelY);
+            this.Controls.Add(this.ExpActiveYLabel);
+            this.Controls.Add(this.expBoxY);
+            this.Controls.Add(this.ExpActiveXLabel);
+            this.Controls.Add(this.expLabelX);
+            this.Controls.Add(this.expBoxX);
             this.Controls.Add(this.ActiveValueTitleY);
             this.Controls.Add(this.AccelTypeActiveLabelY);
             this.Controls.Add(this.OptionSetYTitle);
             this.Controls.Add(this.OptionSetXTitle);
             this.Controls.Add(this.constantThreeLabelY);
-            this.Controls.Add(this.constantTwoLabelY);
+            this.Controls.Add(this.limitLabelY);
             this.Controls.Add(this.offsetLabelY);
             this.Controls.Add(this.weightLabelY);
             this.Controls.Add(this.capLabelY);
             this.Controls.Add(this.constantOneLabelY);
             this.Controls.Add(this.ByComponentXYLock);
             this.Controls.Add(this.MidpointActiveYLabel);
-            this.Controls.Add(this.LimitExpActiveYLabel);
+            this.Controls.Add(this.LimitActiveYLabel);
             this.Controls.Add(this.OffsetActiveYLabel);
             this.Controls.Add(this.AccelerationActiveLabelY);
             this.Controls.Add(this.accelTypeDropY);
@@ -1093,7 +1220,7 @@ namespace grapher
             this.Controls.Add(this.offsetBoxY);
             this.Controls.Add(this.accelerationBoxY);
             this.Controls.Add(this.MidpointActiveXLabel);
-            this.Controls.Add(this.LimitExpActiveXLabel);
+            this.Controls.Add(this.LimitActiveXLabel);
             this.Controls.Add(this.OffsetActiveXLabel);
             this.Controls.Add(this.CapActiveYLabel);
             this.Controls.Add(this.WeightActiveYLabel);
@@ -1120,7 +1247,7 @@ namespace grapher
             this.Controls.Add(this.offsetBoxX);
             this.Controls.Add(this.constantThreeLabelX);
             this.Controls.Add(this.midpointBoxX);
-            this.Controls.Add(this.constantTwoLabelX);
+            this.Controls.Add(this.limitLabelX);
             this.Controls.Add(this.limitBoxX);
             this.Controls.Add(this.weightBoxY);
             this.Controls.Add(this.weightLabelX);
@@ -1170,7 +1297,7 @@ namespace grapher
         private System.Windows.Forms.Label weightLabelX;
         private System.Windows.Forms.TextBox weightBoxY;
         private System.Windows.Forms.TextBox limitBoxX;
-        private System.Windows.Forms.Label constantTwoLabelX;
+        private System.Windows.Forms.Label limitLabelX;
         private System.Windows.Forms.TextBox midpointBoxX;
         private System.Windows.Forms.Label constantThreeLabelX;
         private System.Windows.Forms.TextBox offsetBoxX;
@@ -1210,7 +1337,7 @@ namespace grapher
         private System.Windows.Forms.Label WeightActiveYLabel;
         private System.Windows.Forms.Label CapActiveYLabel;
         private System.Windows.Forms.Label OffsetActiveXLabel;
-        private System.Windows.Forms.Label LimitExpActiveXLabel;
+        private System.Windows.Forms.Label LimitActiveXLabel;
         private System.Windows.Forms.Label MidpointActiveXLabel;
         private System.Windows.Forms.ToolStripMenuItem startupToolStripMenuItem;
         private System.Windows.Forms.ToolStripMenuItem AutoWriteMenuItem;
@@ -1224,14 +1351,14 @@ namespace grapher
         private System.Windows.Forms.ComboBox accelTypeDropY;
         private System.Windows.Forms.Label AccelerationActiveLabelY;
         private System.Windows.Forms.Label OffsetActiveYLabel;
-        private System.Windows.Forms.Label LimitExpActiveYLabel;
+        private System.Windows.Forms.Label LimitActiveYLabel;
         private System.Windows.Forms.Label MidpointActiveYLabel;
         private System.Windows.Forms.CheckBox ByComponentXYLock;
         private System.Windows.Forms.Label constantOneLabelY;
         private System.Windows.Forms.Label capLabelY;
         private System.Windows.Forms.Label weightLabelY;
         private System.Windows.Forms.Label offsetLabelY;
-        private System.Windows.Forms.Label constantTwoLabelY;
+        private System.Windows.Forms.Label limitLabelY;
         private System.Windows.Forms.Label constantThreeLabelY;
         private System.Windows.Forms.Label OptionSetXTitle;
         private System.Windows.Forms.Label OptionSetYTitle;
@@ -1241,6 +1368,18 @@ namespace grapher
         private System.Windows.Forms.ToolStripMenuItem legacyOffsetToolStripMenuItem;
         private System.Windows.Forms.Label ActiveValueTitleY;
         private System.Windows.Forms.ToolStripMenuItem showLastMouseMoveToolStripMenuItem;
+        private System.Windows.Forms.Label expLabelY;
+        private System.Windows.Forms.Label ExpActiveYLabel;
+        private System.Windows.Forms.TextBox expBoxY;
+        private System.Windows.Forms.Label ExpActiveXLabel;
+        private System.Windows.Forms.Label expLabelX;
+        private System.Windows.Forms.TextBox expBoxX;
+        private System.Windows.Forms.Label scaleLabelY;
+        private System.Windows.Forms.Label ScaleActiveYLabel;
+        private System.Windows.Forms.TextBox scaleBoxY;
+        private System.Windows.Forms.Label ScaleActiveXLabel;
+        private System.Windows.Forms.Label scaleLabelX;
+        private System.Windows.Forms.TextBox scaleBoxX;
     }
 }
 
diff --git a/grapher/Form1.cs b/grapher/Form1.cs
index aa3d2ef..6f61c65 100644
--- a/grapher/Form1.cs
+++ b/grapher/Form1.cs
@@ -72,8 +72,12 @@ namespace grapher
                 offsetBoxY,
                 accelerationBoxX,
                 accelerationBoxY,
+                scaleBoxX,
+                scaleBoxY,
                 limitBoxX,
                 limitBoxY,
+                expBoxX,
+                expBoxY,
                 midpointBoxX,
                 midpointBoxY,
                 sensXYLock,
@@ -89,8 +93,12 @@ namespace grapher
                 offsetLabelY,
                 constantOneLabelX,
                 constantOneLabelY,
-                constantTwoLabelX,
-                constantTwoLabelY,
+                scaleLabelX,
+                scaleLabelY,
+                limitLabelX,
+                limitLabelY,
+                expLabelX,
+                expLabelY,
                 constantThreeLabelX,
                 constantThreeLabelY,
                 ActiveValueTitle,
@@ -106,8 +114,12 @@ namespace grapher
                 OffsetActiveYLabel,
                 AccelerationActiveLabelX,
                 AccelerationActiveLabelY,
-                LimitExpActiveXLabel,
-                LimitExpActiveYLabel,
+                ScaleActiveXLabel,
+                ScaleActiveYLabel,
+                LimitActiveXLabel,
+                LimitActiveYLabel,
+                ExpActiveXLabel,
+                ExpActiveYLabel,
                 MidpointActiveXLabel,
                 MidpointActiveYLabel,
                 AccelTypeActiveLabelX,
diff --git a/grapher/Layouts/ClassicLayout.cs b/grapher/Layouts/ClassicLayout.cs
index 572566f..8403c5d 100644
--- a/grapher/Layouts/ClassicLayout.cs
+++ b/grapher/Layouts/ClassicLayout.cs
@@ -11,10 +11,12 @@ namespace grapher.Layouts
             Index = (int)AccelMode.classic;
 
             AccelLayout = new OptionLayout(true, Acceleration);
+            ScaleLayout = new OptionLayout(false, string.Empty);
             CapLayout = new OptionLayout(true, Cap);
             WeightLayout = new OptionLayout(true, Weight);
             OffsetLayout = new OptionLayout(true, Offset);
-            LimExpLayout = new OptionLayout(true, Exponent);
+            LimitLayout = new OptionLayout(false, string.Empty);
+            ExponentLayout = new OptionLayout(true, Exponent);
             MidpointLayout = new OptionLayout(false, string.Empty);
         }
     }
diff --git a/grapher/Layouts/DefaultLayout.cs b/grapher/Layouts/DefaultLayout.cs
index cf6f87f..c8cce6d 100644
--- a/grapher/Layouts/DefaultLayout.cs
+++ b/grapher/Layouts/DefaultLayout.cs
@@ -13,10 +13,12 @@ namespace grapher.Layouts
             LogarithmicCharts = false;
 
             AccelLayout = new OptionLayout(true, Acceleration);
+            ScaleLayout = new OptionLayout(true, Scale);
             CapLayout = new OptionLayout(true, Cap);
             WeightLayout = new OptionLayout(true, Weight);
             OffsetLayout = new OptionLayout(true, Offset);
-            LimExpLayout = new OptionLayout(true, $"{Limit}\\{Exponent}");
+            LimitLayout = new OptionLayout(true, Limit);
+            ExponentLayout = new OptionLayout(true, Exponent);
             MidpointLayout = new OptionLayout(true, Midpoint);
         }
     }
diff --git a/grapher/Layouts/LayoutBase.cs b/grapher/Layouts/LayoutBase.cs
index 04f5189..c380397 100644
--- a/grapher/Layouts/LayoutBase.cs
+++ b/grapher/Layouts/LayoutBase.cs
@@ -18,10 +18,12 @@ namespace grapher.Layouts
         public LayoutBase()
         {
             AccelLayout = new OptionLayout(false, string.Empty);
+            ScaleLayout = new OptionLayout(false, string.Empty);
             CapLayout = new OptionLayout(false, string.Empty);
             WeightLayout = new OptionLayout(false, string.Empty);
             OffsetLayout = new OptionLayout(false, string.Empty);
-            LimExpLayout = new OptionLayout(false, string.Empty);
+            LimitLayout = new OptionLayout(false, string.Empty);
+            ExponentLayout = new OptionLayout(false, string.Empty);
             MidpointLayout = new OptionLayout(false, string.Empty);
 
             ButtonEnabled = true;
@@ -42,22 +44,28 @@ namespace grapher.Layouts
 
         protected OptionLayout AccelLayout { get; set; }
 
+        protected OptionLayout ScaleLayout { get; set; }
+
         protected OptionLayout CapLayout { get; set; }
 
         protected OptionLayout WeightLayout { get; set; }
 
         protected OptionLayout OffsetLayout { get; set; }
 
-        protected OptionLayout LimExpLayout { get; set; }
+        protected OptionLayout LimitLayout { get; set; }
+
+        protected OptionLayout ExponentLayout { get; set; }
 
         protected OptionLayout MidpointLayout { get; set; }
 
         public void Layout(
             IOption accelOption,
+            IOption scaleOption,
             IOption capOption,
             IOption weightOption,
             IOption offsetOption,
-            IOption limExpOption,
+            IOption limitOption,
+            IOption expOption,
             IOption midpointOption,
             Button button,
             int top)
@@ -68,10 +76,12 @@ namespace grapher.Layouts
 
             foreach (var option in new (OptionLayout, IOption)[] {
                 (AccelLayout, accelOption),
+                (ScaleLayout, scaleOption),
                 (CapLayout, capOption),
                 (WeightLayout, weightOption),
                 (OffsetLayout, offsetOption),
-                (LimExpLayout, limExpOption),
+                (LimitLayout, limitOption),
+                (ExponentLayout, expOption),
                 (MidpointLayout, midpointOption)})
             {
                 option.Item1.Layout(option.Item2);
@@ -94,18 +104,22 @@ namespace grapher.Layouts
 
         public void Layout(
             IOption accelOption,
+            IOption scaleOption,
             IOption capOption,
             IOption weightOption,
             IOption offsetOption,
-            IOption limExpOption,
+            IOption limitOption,
+            IOption expOption,
             IOption midpointOption,
             Button button)
         {
             Layout(accelOption,
+                scaleOption,
                 capOption,
                 weightOption,
                 offsetOption,
-                limExpOption,
+                limitOption,
+                expOption,
                 midpointOption,
                 button,
                 accelOption.Top);
diff --git a/grapher/Layouts/LinearLayout.cs b/grapher/Layouts/LinearLayout.cs
index e87c851..0412a2a 100644
--- a/grapher/Layouts/LinearLayout.cs
+++ b/grapher/Layouts/LinearLayout.cs
@@ -12,10 +12,12 @@ namespace grapher.Layouts
             LogarithmicCharts = false;
 
             AccelLayout = new OptionLayout(true, Acceleration);
+            ScaleLayout = new OptionLayout(false, string.Empty);
             CapLayout = new OptionLayout(true, Cap);
             WeightLayout = new OptionLayout(true, Weight);
             OffsetLayout = new OptionLayout(true, Offset);
-            LimExpLayout = new OptionLayout(false, string.Empty);
+            LimitLayout = new OptionLayout(false, string.Empty);
+            ExponentLayout = new OptionLayout(false, string.Empty);
             MidpointLayout = new OptionLayout(false, string.Empty);
         }
     }
diff --git a/grapher/Layouts/MotivityLayout.cs b/grapher/Layouts/MotivityLayout.cs
index c555ef0..839de58 100644
--- a/grapher/Layouts/MotivityLayout.cs
+++ b/grapher/Layouts/MotivityLayout.cs
@@ -17,10 +17,12 @@ namespace grapher.Layouts
             LogarithmicCharts = true;
 
             AccelLayout = new OptionLayout(true, Acceleration);
+            ScaleLayout = new OptionLayout(false, string.Empty);
             CapLayout = new OptionLayout(false, string.Empty);
             WeightLayout = new OptionLayout(true, Weight);
             OffsetLayout = new OptionLayout(false, string.Empty);
-            LimExpLayout = new OptionLayout(true, Motivity);
+            LimitLayout = new OptionLayout(true, Motivity);
+            ExponentLayout = new OptionLayout(false, string.Empty);
             MidpointLayout = new OptionLayout(true, Midpoint);
         }
     }
diff --git a/grapher/Layouts/NaturalGainLayout.cs b/grapher/Layouts/NaturalGainLayout.cs
index b9cf75e..12daed3 100644
--- a/grapher/Layouts/NaturalGainLayout.cs
+++ b/grapher/Layouts/NaturalGainLayout.cs
@@ -12,10 +12,12 @@ namespace grapher.Layouts
             LogarithmicCharts = false;
 
             AccelLayout = new OptionLayout(true, Acceleration);
+            ScaleLayout = new OptionLayout(false, string.Empty);
             CapLayout = new OptionLayout(false, string.Empty);
             WeightLayout = new OptionLayout(true, Weight);
             OffsetLayout = new OptionLayout(true, Offset);
-            LimExpLayout = new OptionLayout(true, Limit);
+            LimitLayout = new OptionLayout(true, Limit);
+            ExponentLayout = new OptionLayout(false, string.Empty);
             MidpointLayout = new OptionLayout(false, string.Empty);
         }
     }
diff --git a/grapher/Layouts/NaturalLayout.cs b/grapher/Layouts/NaturalLayout.cs
index 59895df..44129f9 100644
--- a/grapher/Layouts/NaturalLayout.cs
+++ b/grapher/Layouts/NaturalLayout.cs
@@ -12,10 +12,12 @@ namespace grapher.Layouts
             LogarithmicCharts = false;
 
             AccelLayout = new OptionLayout(true, Acceleration);
+            ScaleLayout = new OptionLayout(false, string.Empty);
             CapLayout = new OptionLayout(false, string.Empty);
             WeightLayout = new OptionLayout(true, Weight);
             OffsetLayout = new OptionLayout(true, Offset);
-            LimExpLayout = new OptionLayout(true, Limit);
+            LimitLayout = new OptionLayout(true, Limit);
+            ExponentLayout = new OptionLayout(false, string.Empty);
             MidpointLayout = new OptionLayout(false, string.Empty);
         }
     }
diff --git a/grapher/Layouts/OffLayout.cs b/grapher/Layouts/OffLayout.cs
index c47ea39..664e364 100644
--- a/grapher/Layouts/OffLayout.cs
+++ b/grapher/Layouts/OffLayout.cs
@@ -13,10 +13,12 @@ namespace grapher.Layouts
             LogarithmicCharts = false;
 
             AccelLayout = new OptionLayout(false, string.Empty);
+            ScaleLayout = new OptionLayout(false, string.Empty);
             CapLayout = new OptionLayout(false, string.Empty);
             WeightLayout = new OptionLayout(false, string.Empty);
             OffsetLayout = new OptionLayout(false, string.Empty);
-            LimExpLayout = new OptionLayout(false, string.Empty);
+            LimitLayout = new OptionLayout(false, string.Empty);
+            ExponentLayout = new OptionLayout(false, string.Empty);
             MidpointLayout = new OptionLayout(false, string.Empty);
         }
     }
diff --git a/grapher/Layouts/PowerLayout.cs b/grapher/Layouts/PowerLayout.cs
index e12ac4a..1911813 100644
--- a/grapher/Layouts/PowerLayout.cs
+++ b/grapher/Layouts/PowerLayout.cs
@@ -11,11 +11,13 @@ namespace grapher.Layouts
             Index = (int)AccelMode.power;
             LogarithmicCharts = false;
 
-            AccelLayout = new OptionLayout(true, Scale);
+            AccelLayout = new OptionLayout(false, string.Empty);
+            ScaleLayout = new OptionLayout(true, Scale);
             CapLayout = new OptionLayout(true, Cap);
             WeightLayout = new OptionLayout(true, Weight);
             OffsetLayout = new OptionLayout(true, Offset);
-            LimExpLayout = new OptionLayout(true, Exponent);
+            LimitLayout = new OptionLayout(false, string.Empty);
+            ExponentLayout = new OptionLayout(true, Exponent);
             MidpointLayout = new OptionLayout(false, string.Empty);
         }
     }
diff --git a/grapher/Models/AccelGUI.cs b/grapher/Models/AccelGUI.cs
index 1fff4c3..c9c4ed0 100644
--- a/grapher/Models/AccelGUI.cs
+++ b/grapher/Models/AccelGUI.cs
@@ -3,6 +3,7 @@ using grapher.Models.Mouse;
 using grapher.Models.Options;
 using grapher.Models.Serialized;
 using System;
+using System.Drawing;
 using System.Windows.Forms;
 
 namespace grapher
@@ -72,6 +73,8 @@ namespace grapher
 
         public void UpdateActiveSettingsFromFields()
         {
+            var driverSettings = Settings.RawAccelSettings.AccelerationSettings;
+
             var settings = new DriverSettings
             {
                 rotation = ApplyOptions.Rotation.Field.Data,
@@ -82,13 +85,20 @@ namespace grapher
                 },
                 combineMagnitudes = ApplyOptions.IsWhole,
                 modes = ApplyOptions.GetModes(),
-                args = ApplyOptions.GetArgs(),
-                minimumTime = .4
+                args = ApplyOptions.GetUpdatedArgs(ref driverSettings.args),
+                minimumTime = driverSettings.minimumTime
             };
 
             WriteButtonDelay();
-            Settings.UpdateActiveSettings(settings);
-            RefreshOnRead();
+            SettingsErrors errors = Settings.TryUpdateActiveSettings(settings);
+            if (errors.Empty())
+            {
+                RefreshOnRead();
+            }
+            else
+            {
+                WriteButton.Text = "bad args";
+            }
         }
 
         public void RefreshOnRead()
@@ -126,7 +136,7 @@ namespace grapher
         {
             Timer buttonTimer = new Timer();
             buttonTimer.Enabled = true;
-            buttonTimer.Interval = Convert.ToInt32(ManagedAccel.WriteDelay);
+            buttonTimer.Interval = Convert.ToInt32(DriverInterop.WriteDelayMs);
             buttonTimer.Tick += new System.EventHandler(OnButtonTimerTick);
             return buttonTimer;
         }
@@ -141,12 +151,14 @@ namespace grapher
         {
             WriteButton.Text = Constants.WriteButtonDefaultText;
             WriteButton.Enabled = true;
+            WriteButton.Update();
         }
 
         private void SetWriteButtonDelay()
         {
             WriteButton.Enabled = false;
             WriteButton.Text = $"{Constants.WriteButtonDelayText} : {ButtonTimer.Interval} ms";
+            WriteButton.Update();
         }
 
         private void OnScaleMenuItemClick(object sender, EventArgs e)
diff --git a/grapher/Models/AccelGUIFactory.cs b/grapher/Models/AccelGUIFactory.cs
index 469fcf7..9f557f3 100644
--- a/grapher/Models/AccelGUIFactory.cs
+++ b/grapher/Models/AccelGUIFactory.cs
@@ -46,8 +46,12 @@ namespace grapher.Models
             TextBox offsetBoxY,
             TextBox accelerationBoxX,
             TextBox accelerationBoxY,
+            TextBox scaleBoxX,
+            TextBox scaleBoxY,
             TextBox limitBoxX,
             TextBox limitBoxY,
+            TextBox expBoxX,
+            TextBox expBoxY,
             TextBox midpointBoxX,
             TextBox midpointBoxY,
             CheckBox sensXYLock,
@@ -63,8 +67,12 @@ namespace grapher.Models
             Label offsetLabelY,
             Label constantOneLabelX,
             Label constantOneLabelY,
-            Label constantTwoLabelX,
-            Label constantTwoLabelY,
+            Label scaleLabelX,
+            Label scaleLabelY,
+            Label limitLabelX,
+            Label limitLabelY,
+            Label expLabelX,
+            Label expLabelY,
             Label constantThreeLabelX,
             Label constantThreeLabelY,
             Label activeValueTitleX,
@@ -80,8 +88,12 @@ namespace grapher.Models
             Label offsetActiveLabelY,
             Label accelerationActiveLabelX,
             Label accelerationActiveLabelY,
-            Label limitExpActiveLabelX,
-            Label limitExpActiveLabelY,
+            Label scaleActiveLabelX,
+            Label scaleActiveLabelY,
+            Label limitActiveLabelX,
+            Label limitActiveLabelY,
+            Label expActiveLabelX,
+            Label expActiveLabelY,
             Label midpointActiveLabelX,
             Label midpointActiveLabelY,
             Label accelTypeActiveLabelX,
@@ -203,16 +215,40 @@ namespace grapher.Models
                 new ActiveValueLabel(accelerationActiveLabelY, activeValueTitleY),
                 optionSetYLeft);
 
-            var limitOrExponentX = new Option(
+            var scaleX = new Option(
+                new Field(scaleBoxX, form, 0),
+                scaleLabelX,
+                new ActiveValueLabel(scaleActiveLabelX, activeValueTitleX),
+                0);
+
+            var scaleY = new Option(
+                new Field(scaleBoxY, form, 0),
+                scaleLabelY,
+                new ActiveValueLabel(scaleActiveLabelY, activeValueTitleY),
+                optionSetYLeft);
+
+            var limitX = new Option(
                 new Field(limitBoxX, form, 2),
-                constantTwoLabelX,
-                new ActiveValueLabel(limitExpActiveLabelX, activeValueTitleX),
+                limitLabelX,
+                new ActiveValueLabel(limitActiveLabelX, activeValueTitleX),
                 0);
 
-            var limitOrExponentY = new Option(
+            var limitY = new Option(
                 new Field(limitBoxY, form, 2),
-                constantTwoLabelY,
-                new ActiveValueLabel(limitExpActiveLabelY, activeValueTitleY),
+                limitLabelY,
+                new ActiveValueLabel(limitActiveLabelY, activeValueTitleY),
+                optionSetYLeft);
+
+            var exponentX = new Option(
+                new Field(expBoxX, form, 2),
+                expLabelX,
+                new ActiveValueLabel(expActiveLabelX, activeValueTitleX),
+                0);
+
+            var exponentY = new Option(
+                new Field(expBoxY, form, 2),
+                expLabelY,
+                new ActiveValueLabel(expActiveLabelY, activeValueTitleY),
                 optionSetYLeft);
 
             var midpointX = new Option(
@@ -240,10 +276,12 @@ namespace grapher.Models
             var accelerationOptionsX = new AccelTypeOptions(
                 accelTypeDropX,
                 accelerationX,
+                scaleX,
                 capOptionsX,
                 weightX,
                 offsetOptionsX,
-                limitOrExponentX,
+                limitX,
+                exponentX,
                 midpointX,
                 writeButton,
                 new ActiveValueLabel(accelTypeActiveLabelX, activeValueTitleX));
@@ -251,10 +289,12 @@ namespace grapher.Models
             var accelerationOptionsY = new AccelTypeOptions(
                 accelTypeDropY,
                 accelerationY,
+                scaleY,
                 capOptionsY,
                 weightY,
                 offsetOptionsY,
-                limitOrExponentY,
+                limitY,
+                exponentY,
                 midpointY,
                 writeButton,
                 new ActiveValueLabel(accelTypeActiveLabelY, activeValueTitleY));
diff --git a/grapher/Models/Options/AccelOptionSet.cs b/grapher/Models/Options/AccelOptionSet.cs
index 11a7f10..53c39af 100644
--- a/grapher/Models/Options/AccelOptionSet.cs
+++ b/grapher/Models/Options/AccelOptionSet.cs
@@ -98,14 +98,14 @@ namespace grapher.Models.Options
             Options.Top = TopAnchor;
         }
 
-        public void SetArgs(ref AccelArgs args)
+        public void SetArgs(ref AccelArgs args, ref /*readonly*/ AccelArgs last)
         {
-            Options.SetArgs(ref args);
+            Options.SetArgs(ref args, ref last);
         }
 
-        public AccelArgs GenerateArgs()
+        public AccelArgs GenerateArgs(ref /*readonly*/ AccelArgs last)
         {
-            return Options.GenerateArgs();
+            return Options.GenerateArgs(ref last);
         }
 
         public void SetActiveValues(int mode, AccelArgs args)
diff --git a/grapher/Models/Options/AccelTypeOptions.cs b/grapher/Models/Options/AccelTypeOptions.cs
index 573e9b9..9a4ab7c 100644
--- a/grapher/Models/Options/AccelTypeOptions.cs
+++ b/grapher/Models/Options/AccelTypeOptions.cs
@@ -30,10 +30,12 @@ namespace grapher
         public AccelTypeOptions(
             ComboBox accelDropdown,
             Option acceleration,
+            Option scale,
             CapOptions cap,
             Option weight,
             OffsetOptions offset,
-            Option limitOrExponent,
+            Option limit,
+            Option exponent,
             Option midpoint,
             Button writeButton,
             ActiveValueLabel accelTypeActiveValue)
@@ -44,10 +46,12 @@ namespace grapher
             AccelDropdown.SelectedIndexChanged += new System.EventHandler(OnIndexChanged);
 
             Acceleration = acceleration;
+            Scale = scale;
             Cap = cap;
             Weight = weight;
             Offset = offset;
-            LimitOrExponent = limitOrExponent;
+            Limit = limit;
+            Exponent = exponent;
             Midpoint = midpoint;
             WriteButton = writeButton;
             AccelTypeActiveValue = accelTypeActiveValue;
@@ -82,13 +86,17 @@ namespace grapher
 
         public Option Acceleration { get; }
 
+        public Option Scale { get; }
+
         public CapOptions Cap { get; }
 
         public Option Weight { get; }
 
         public OffsetOptions Offset { get; }
 
-        public Option LimitOrExponent { get; }
+        public Option Limit { get; }
+
+        public Option Exponent { get; }
 
         public Option Midpoint { get; }
 
@@ -158,10 +166,12 @@ namespace grapher
             AccelTypeActiveValue.Hide();
 
             Acceleration.Hide();
+            Scale.Hide();
             Cap.Hide();
             Weight.Hide();
             Offset.Hide();
-            LimitOrExponent.Hide();
+            Limit.Hide();
+            Exponent.Hide();
             Midpoint.Hide();
         }
 
@@ -185,9 +195,11 @@ namespace grapher
 
             Weight.SetActiveValue(args.weight);
             Cap.SetActiveValues(args.gainCap, args.scaleCap, args.gainCap > 0 || args.scaleCap <= 0);
-            Offset.SetActiveValue(args.offset, args.legacy_offset);
-            Acceleration.SetActiveValue(args.accel);
-            LimitOrExponent.SetActiveValue(args.exponent);
+            Offset.SetActiveValue(args.offset, args.legacyOffset);
+            Acceleration.SetActiveValue(args.acceleration);
+            Scale.SetActiveValue(args.scale);
+            Limit.SetActiveValue(args.limit);
+            Exponent.SetActiveValue(args.exponent);
             Midpoint.SetActiveValue(args.midpoint);
         }
 
@@ -213,26 +225,24 @@ namespace grapher
             Width = Acceleration.Field.Width;
         }
 
-        public void SetArgs(ref AccelArgs args)
+        public void SetArgs(ref AccelArgs args, ref /*readonly*/ AccelArgs last)
         {
-            args.accel = Acceleration.Field.Data;
-            args.rate = Acceleration.Field.Data;
-            args.powerScale = Acceleration.Field.Data;
+            args.acceleration = Acceleration.Visible ? Acceleration.Field.Data : last.acceleration;
+            args.scale = Scale.Visible ? Scale.Field.Data : last.scale;
             args.gainCap = Cap.VelocityGainCap;
             args.scaleCap = Cap.SensitivityCap;
-            args.limit = LimitOrExponent.Field.Data;
-            args.exponent = LimitOrExponent.Field.Data;
-            args.powerExponent = LimitOrExponent.Field.Data;
+            args.limit = Limit.Visible ? Limit.Field.Data : last.limit;
+            args.exponent = Exponent.Visible ? Exponent.Field.Data : last.exponent;
             args.offset = Offset.Offset;
-            args.legacy_offset = Offset.LegacyOffset;
-            args.midpoint = Midpoint.Field.Data;
-            args.weight = Weight.Field.Data;
+            args.legacyOffset = Offset.IsLegacy;
+            args.midpoint = Midpoint.Visible ? Midpoint.Field.Data : last.midpoint;
+            args.weight = Weight.Visible ? Weight.Field.Data : last.weight;
         }
 
-        public AccelArgs GenerateArgs()
+        public AccelArgs GenerateArgs(ref /*readonly*/ AccelArgs last)
         {
             AccelArgs args = new AccelArgs();
-            SetArgs(ref args);
+            SetArgs(ref args, ref last);
             return args;
         }
 
@@ -240,10 +250,12 @@ namespace grapher
         {
             AccelTypeActiveValue.Align();
             Acceleration.AlignActiveValues();
+            Scale.AlignActiveValues();
             Cap.AlignActiveValues();
             Offset.AlignActiveValues();
             Weight.AlignActiveValues();
-            LimitOrExponent.AlignActiveValues();
+            Limit.AlignActiveValues();
+            Exponent.AlignActiveValues();
             Midpoint.AlignActiveValues();
         }
 
@@ -269,10 +281,12 @@ namespace grapher
 
             AccelerationType.Layout(
                 Acceleration,
+                Scale,
                 Cap,
                 Weight,
                 Offset,
-                LimitOrExponent,
+                Limit,
+                Exponent,
                 Midpoint,
                 WriteButton,
                 top);
diff --git a/grapher/Models/Options/ApplyOptions.cs b/grapher/Models/Options/ApplyOptions.cs
index c2ed498..51c80ea 100644
--- a/grapher/Models/Options/ApplyOptions.cs
+++ b/grapher/Models/Options/ApplyOptions.cs
@@ -89,14 +89,14 @@ namespace grapher.Models.Options
             };
         }
 
-        public Vec2<AccelArgs> GetArgs()
+        public Vec2<AccelArgs> GetUpdatedArgs(ref /*readonly*/ Vec2<AccelArgs> last)
         {
-            var xArgs = OptionSetX.GenerateArgs();
+            var xArgs = OptionSetX.GenerateArgs(ref last.x);
             
             return new Vec2<AccelArgs>
             {
                 x = xArgs,
-                y = ByComponentVectorXYLock.Checked ? xArgs : OptionSetY.GenerateArgs()
+                y = ByComponentVectorXYLock.Checked ? xArgs : OptionSetY.GenerateArgs(ref last.y)
             };
 
         }
diff --git a/grapher/Models/Options/OffsetOptions.cs b/grapher/Models/Options/OffsetOptions.cs
index b351ab5..c6bee75 100644
--- a/grapher/Models/Options/OffsetOptions.cs
+++ b/grapher/Models/Options/OffsetOptions.cs
@@ -128,16 +128,9 @@ namespace grapher.Models.Options
             OffsetOption.Show(name);
         }
 
-        public void SetActiveValue(double offset, double legacyOffset)
+        public void SetActiveValue(double offset, bool legacy)
         {
-            if (offset > 0)
-            {
-                OffsetOption.SetActiveValue(offset);
-            }
-            else
-            {
-                OffsetOption.SetActiveValue(legacyOffset);
-            }
+            OffsetOption.SetActiveValue(offset);
         }
 
         public override void AlignActiveValues()
diff --git a/grapher/Models/Serialized/RawAccelSettings.cs b/grapher/Models/Serialized/RawAccelSettings.cs
index 3f5aebc..570a6c8 100644
--- a/grapher/Models/Serialized/RawAccelSettings.cs
+++ b/grapher/Models/Serialized/RawAccelSettings.cs
@@ -1,6 +1,8 @@
 using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
 using System;
 using System.IO;
+using System.Linq;
 
 namespace grapher.Models.Serialized
 {
@@ -13,9 +15,8 @@ namespace grapher.Models.Serialized
         public static readonly string DefaultSettingsFile = Path.Combine(ExecutingDirectory, Constants.DefaultSettingsFileName);
         public static readonly JsonSerializerSettings SerializerSettings = new JsonSerializerSettings
         {
-            MissingMemberHandling = MissingMemberHandling.Error,
+            MissingMemberHandling = MissingMemberHandling.Ignore,
         };
-
         #endregion Fields
 
         #region Constructors
@@ -33,9 +34,10 @@ namespace grapher.Models.Serialized
         #endregion Constructors
 
         #region Properties
-
+        [JsonProperty(Required = Required.Always)]
         public GUISettings GUISettings { get; set; }
 
+        [JsonProperty(DriverSettings.Key, Required = Required.Always)]
         public DriverSettings AccelerationSettings { get; set; }
 
         #endregion Properties
@@ -51,15 +53,17 @@ namespace grapher.Models.Serialized
         {   
             try
             {
-               return JsonConvert.DeserializeObject<RawAccelSettings>(File.ReadAllText(file), SerializerSettings);
+                var settings = JsonConvert.DeserializeObject<RawAccelSettings>(File.ReadAllText(file), SerializerSettings);
+                if (settings is null) throw new JsonException($"{file} contains invalid JSON");
+                return settings;
             }
             catch (FileNotFoundException e)
             {
                 throw new FileNotFoundException($"Settings file does not exist at {file}", e);
             }
-            catch (JsonSerializationException e)
+            catch (JsonException e)
             {
-                throw new JsonSerializationException($"Settings file at {file} does not contain valid Raw Accel Settings.", e);
+                throw new JsonException($"Settings file at {file} does not contain valid Raw Accel Settings.", e);
             }
         }
 
@@ -80,7 +84,16 @@ namespace grapher.Models.Serialized
 
         public void Save(string file)
         {
-            File.WriteAllText(file, JsonConvert.SerializeObject(this, Formatting.Indented));
+            JObject thisJO = JObject.FromObject(this);
+            AddComments(thisJO);
+            File.WriteAllText(file, thisJO.ToString(Formatting.Indented));
+        }
+
+        private void AddComments(JObject thisJO)
+        {
+            string modes = string.Join(" | ", Enum.GetNames(typeof(AccelMode)));
+            ((JObject)thisJO[DriverSettings.Key])
+                .AddFirst(new JProperty("### Mode Types ###", modes));
         }
 
         #endregion Methods
diff --git a/grapher/Models/Serialized/SettingsManager.cs b/grapher/Models/Serialized/SettingsManager.cs
index 26160f5..93cf42b 100644
--- a/grapher/Models/Serialized/SettingsManager.cs
+++ b/grapher/Models/Serialized/SettingsManager.cs
@@ -47,28 +47,31 @@ namespace grapher.Models.Serialized
 
         #region Methods
 
-        public void UpdateActiveSettings(DriverSettings settings)
+        public SettingsErrors TryUpdateActiveSettings(DriverSettings settings)
         {
-            ActiveAccel.UpdateFromSettings(settings);
-            SendToDriver(settings);
+            var errors = TryUpdateAccel(settings);
 
-            RawAccelSettings.AccelerationSettings = settings;
-            RawAccelSettings.GUISettings = new GUISettings
+            if (errors.Empty())
             {
-                AutoWriteToDriverOnStartup = AutoWriteMenuItem.Checked,
-                DPI = (int)DpiField.Data,
-                PollRate = (int)PollRateField.Data,
-                ShowLastMouseMove = ShowLastMouseMoveMenuItem.Checked,
-                ShowVelocityAndGain = ShowVelocityAndGainMoveMenuItem.Checked,
-            };
+                RawAccelSettings.AccelerationSettings = settings;
+                RawAccelSettings.GUISettings = new GUISettings
+                {
+                    AutoWriteToDriverOnStartup = AutoWriteMenuItem.Checked,
+                    DPI = (int)DpiField.Data,
+                    PollRate = (int)PollRateField.Data,
+                    ShowLastMouseMove = ShowLastMouseMoveMenuItem.Checked,
+                    ShowVelocityAndGain = ShowVelocityAndGainMoveMenuItem.Checked,
+                };
 
-            RawAccelSettings.Save();
+                RawAccelSettings.Save();
+            }
+
+            return errors;
         }
 
         public void UpdateActiveAccelFromFileSettings(DriverSettings settings)
-        { 
-            ActiveAccel.UpdateFromSettings(settings);
-            SendToDriver(settings);
+        {
+            TryUpdateAccel(settings);
 
             DpiField.SetToEntered(RawAccelSettings.GUISettings.DPI);
             PollRateField.SetToEntered(RawAccelSettings.GUISettings.PollRate);
@@ -77,9 +80,23 @@ namespace grapher.Models.Serialized
             ShowVelocityAndGainMoveMenuItem.Checked = RawAccelSettings.GUISettings.ShowVelocityAndGain;
         }
 
+        public SettingsErrors TryUpdateAccel(DriverSettings settings)
+        {
+            var errors = SendToDriverSafe(settings);
+            if (errors.Empty()) ActiveAccel.UpdateFromSettings(settings);
+            return errors;
+        }
+
         public static void SendToDriver(DriverSettings settings)
         {
-            new Thread(() => DriverInterop.SetActiveSettings(settings)).Start();
+            new Thread(() => DriverInterop.Write(settings)).Start();
+        }
+
+        public static SettingsErrors SendToDriverSafe(DriverSettings settings)
+        {
+            var errors = DriverInterop.GetSettingsErrors(settings);
+            if (errors.Empty()) SendToDriver(settings);
+            return errors;
         }
 
         public void Startup()
@@ -95,7 +112,7 @@ namespace grapher.Models.Serialized
                     }
                     return;
                 }
-                catch (JsonSerializationException e)
+                catch (JsonException e)
                 {
                     Console.WriteLine($"bad settings: {e}");
                 }