private void helpButton_Click(object sender, EventArgs e)
        {
            Form legend = new Form();
            legend.Icon = BIDSHelper.Resources.Common.BIDSHelper;
            legend.Text = "Measure Group Health Check: Legend";
            legend.MaximizeBox = false;
            legend.MinimizeBox = false;

            TextBox text = new TextBox();
            text.Location = new System.Drawing.Point(2, 2);
            text.Size = new System.Drawing.Size(500, 380);
            text.Multiline = true;
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("Columns:");
            sb.AppendLine("Measure - The measure name");
            sb.AppendLine("Aggregate - The aggregate function for that measure");
            sb.AppendLine("Total - The aggregated value across all rows");
            sb.AppendLine("Min - The minimum value from a single row");
            sb.AppendLine("Max - The maximum value from a single row");
            sb.AppendLine("Decimals? - Are there any values that have decimals? More than 4 decimals?");
            sb.AppendLine("DSV - The datatype for the column in the data source view");
            sb.AppendLine("Current - The current measure datatype");
            sb.AppendLine("New - The recommended new measure datatype");
            sb.AppendLine();
            sb.AppendLine("Datatypes:");
            foreach (MeasureGroupHealthCheckPlugin.MeasureDataTypeOption dataType in MeasureGroupHealthCheckPlugin.dataTypeOptions)
            {
                sb.Append(dataType.dataType.ToString()).Append("/").Append(dataType.type.Name);
                sb.Append(" (").Append(dataType.displayMin).Append(" to ").Append(dataType.displayMax).Append(") ").AppendLine(dataType.limitations);
            }
            text.Text = sb.ToString();
            text.ReadOnly = true;
            text.Select(0, 0);
            text.BorderStyle = BorderStyle.None;
            text.PerformLayout();

            legend.Controls.Add(text);
            legend.Width = text.Width + 4;
            legend.Height = text.Height + 4;
            legend.MinimumSize = legend.Size;
            legend.MaximumSize = legend.Size;
            legend.SizeGripStyle = SizeGripStyle.Hide;
            legend.ShowInTaskbar = false;
            legend.StartPosition = FormStartPosition.CenterParent;
            legend.FormBorderStyle = FormBorderStyle.Fixed3D;
            legend.PerformLayout();
            legend.ShowDialog();
            legend.Dispose();
        }