diff --git a/Source/Demo/Common/HtmlPrettyPrinter.cs b/Source/Demo/Common/HtmlPrettyPrinter.cs
new file mode 100644
index 000000000..09d0e207d
--- /dev/null
+++ b/Source/Demo/Common/HtmlPrettyPrinter.cs
@@ -0,0 +1,145 @@
+// "Therefore those skilled at the unorthodox
+// are infinite as heaven and earth,
+// inexhaustible as the great rivers.
+// When they come to an end,
+// they begin again,
+// like the days and months;
+// they die and are reborn,
+// like the four seasons."
+// 
+// - Sun Tsu,
+// "The Art of War"
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using HtmlKit;
+
+namespace TheArtOfDev.HtmlRenderer.Demo.Common
+{
+    /// <summary>
+    /// Utility to format HTML into a readable representation while preserving semantic structure.
+    /// </summary>
+    public static class HtmlPrettyPrinter
+    {
+        /// <summary>
+        /// html tags that should be written with indentation on separate lines
+        /// </summary>
+        private static readonly HashSet<string> _blockTags = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        {
+            "article", "aside", "blockquote", "body", "caption", "colgroup", "dd", "div", "dl", "dt", "fieldset", "figcaption",
+            "figure", "footer", "form", "head", "header", "html", "li", "main", "nav", "ol", "p", "section", "table", "tbody",
+            "td", "tfoot", "th", "thead", "tr", "ul", "title"
+        };
+
+        /// <summary>
+        /// html tags that don't have a closing tag and should not change indentation depth
+        /// </summary>
+        private static readonly HashSet<string> _voidTags = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        {
+            "area", "base", "br", "col", "embed", "hr", "img", "input", "link", "meta", "param", "source", "track", "wbr"
+        };
+
+        /// <summary>
+        /// Format the given html into a readable left-to-right comparable layout.
+        /// </summary>
+        public static string Format(string html)
+        {
+            if (string.IsNullOrWhiteSpace(html))
+                return string.Empty;
+
+            var builder = new StringBuilder(html.Length * 2);
+            using (var reader = new StringReader(html))
+            using (var writer = new StringWriter(builder))
+            {
+                var tokenizer = new HtmlTokenizer(reader);
+                HtmlToken token;
+                int indent = 0;
+
+                while (tokenizer.ReadNextToken(out token))
+                {
+                    switch (token.Kind)
+                    {
+                        case HtmlTokenKind.DocType:
+                        case HtmlTokenKind.Comment:
+                            AppendTokenLine(builder, writer, token, indent);
+                            break;
+
+                        case HtmlTokenKind.Tag:
+                            var tag = (HtmlTagToken)token;
+                            var isBlockTag = _blockTags.Contains(tag.Name);
+                            var isVoidTag = tag.IsEmptyElement || _voidTags.Contains(tag.Name);
+
+                            if (tag.IsEndTag)
+                            {
+                                if (isBlockTag)
+                                {
+                                    indent = Math.Max(0, indent - 1);
+                                    AppendTokenLine(builder, writer, token, indent);
+                                }
+                                else
+                                {
+                                    token.WriteTo(writer);
+                                }
+                            }
+                            else if (isBlockTag)
+                            {
+                                AppendTokenLine(builder, writer, token, indent);
+                                if (!isVoidTag)
+                                    indent++;
+                            }
+                            else
+                            {
+                                token.WriteTo(writer);
+                            }
+                            break;
+
+                        case HtmlTokenKind.CData:
+                        case HtmlTokenKind.Data:
+                        case HtmlTokenKind.ScriptData:
+                            var data = ((HtmlDataToken)token).Data;
+                            if (!string.IsNullOrWhiteSpace(data))
+                            {
+                                if (IsAtLineStart(builder))
+                                    AppendIndent(builder, indent);
+                                builder.Append(data);
+                            }
+                            break;
+                    }
+                }
+            }
+
+            return builder.ToString().Trim();
+        }
+
+        /// <summary>
+        /// Append the given html token on its own line using the given indentation level.
+        /// </summary>
+        private static void AppendTokenLine(StringBuilder builder, StringWriter writer, HtmlToken token, int indent)
+        {
+            if (!IsAtLineStart(builder))
+                builder.AppendLine();
+
+            AppendIndent(builder, indent);
+            token.WriteTo(writer);
+            builder.AppendLine();
+        }
+
+        /// <summary>
+        /// Append indentation spaces to the string builder.
+        /// </summary>
+        private static void AppendIndent(StringBuilder builder, int indent)
+        {
+            builder.Append(' ', indent * 2);
+        }
+
+        /// <summary>
+        /// Return if the builder currently points at the start of a new line.
+        /// </summary>
+        private static bool IsAtLineStart(StringBuilder builder)
+        {
+            return builder.Length == 0 || builder[builder.Length - 1] == '\n';
+        }
+    }
+}
diff --git a/Source/Demo/WPF/MainControl.xaml b/Source/Demo/WPF/MainControl.xaml
index 714c2dbf1..9f4fd98a6 100644
--- a/Source/Demo/WPF/MainControl.xaml
+++ b/Source/Demo/WPF/MainControl.xaml
@@ -37,16 +37,48 @@
                 <WebBrowser x:Name="_webBrowser" Grid.Column="2" Visibility="Collapsed"/>
             </Grid>
             <GridSplitter Grid.Row="1" HorizontalAlignment="Stretch" Height="4" Background="#BFDBFF" />
-            <xctk:RichTextBox x:Name="_htmlEditor" Grid.Row="2" VerticalScrollBarVisibility="Visible" BorderThickness="0" 
-                         TextChanged="OnHtmlEditor_TextChanged" />
+            <Grid Grid.Row="2">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="*" MinWidth="150" />
+                    <ColumnDefinition Width="4" />
+                    <ColumnDefinition Width="*" MinWidth="150" />
+                </Grid.ColumnDefinitions>
+                <Grid Grid.Column="0">
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="*" />
+                    </Grid.RowDefinitions>
+                    <Grid Grid.Row="0" Margin="0,0,0,2">
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="*" />
+                            <ColumnDefinition Width="Auto" />
+                            <ColumnDefinition Width="Auto" />
+                        </Grid.ColumnDefinitions>
+                        <Label Grid.Column="0" VerticalAlignment="Center">Input HTML</Label>
+                        <Label Grid.Column="1" Margin="0,0,10,0" VerticalAlignment="Center" FontSize="11" Foreground="Blue" Cursor="Hand"
+                               MouseLeftButtonUp="OnRefreshLink_MouseLeftButtonUp">
+                            <Underline>Refresh</Underline>
+                        </Label>
+                        <CheckBox x:Name="_coloredCheckBox" Grid.Column="2" VerticalAlignment="Center" FontSize="11" Foreground="Blue" Cursor="Hand"
+                                  Click="OnColoredCheckbox_click">
+                            <Underline>Colored</Underline>
+                        </CheckBox>
+                    </Grid>
+                    <xctk:RichTextBox x:Name="_htmlEditor" Grid.Row="1" BorderThickness="0"
+                                      VerticalScrollBarVisibility="Visible" HorizontalScrollBarVisibility="Visible"
+                                      TextChanged="OnHtmlEditor_TextChanged" />
+                </Grid>
+                <GridSplitter Grid.Column="1" Width="4" VerticalAlignment="Stretch" ResizeBehavior="PreviousAndNext" Background="#BFDBFF" />
+                <Grid Grid.Column="2">
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="*" />
+                    </Grid.RowDefinitions>
+                    <Label Grid.Row="0" VerticalAlignment="Center">Fixed HTML</Label>
+                    <xctk:RichTextBox x:Name="_fixedHtmlEditor" Grid.Row="1" BorderThickness="0" IsReadOnly="True"
+                                      VerticalScrollBarVisibility="Visible" HorizontalScrollBarVisibility="Visible" />
+                </Grid>
+            </Grid>
         </Grid>
-        <Label HorizontalAlignment="Right" Margin="0,0,16,14" VerticalAlignment="Bottom" Grid.Column="1" FontSize="11" Foreground="Blue" Cursor="Hand"
-               MouseLeftButtonUp="OnRefreshLink_MouseLeftButtonUp">
-            <Underline>Refresh</Underline>
-        </Label>
-        <CheckBox x:Name="_coloredCheckBox" HorizontalAlignment="Right" Margin="0,0,22,2" VerticalAlignment="Bottom" Grid.Column="1" FontSize="11" Foreground="Blue" Cursor="Hand"
-               Click="OnColoredCheckbox_click">
-            <Underline>Colored</Underline>
-        </CheckBox>
     </Grid>
 </UserControl>
diff --git a/Source/Demo/WPF/MainControl.xaml.cs b/Source/Demo/WPF/MainControl.xaml.cs
index 00fd7b5c5..bce20029e 100644
--- a/Source/Demo/WPF/MainControl.xaml.cs
+++ b/Source/Demo/WPF/MainControl.xaml.cs
@@ -128,6 +128,7 @@ public string GetHtml()
         public void SetHtml(string html)
         {
             _htmlPanel.Text = html;
+            UpdateFixedHtmlView();
             if (string.IsNullOrWhiteSpace(html))
             {
                 _htmlPanel.InvalidateMeasure();
@@ -219,9 +220,11 @@ private void OnTreeView_SelectedItemChanged(object sender, RoutedPropertyChanged
                 {
                     _htmlPanel.AvoidImagesLateLoading = !sample.FullName.Contains("Many images");
                     _htmlPanel.Text = sample.Html;
+                    UpdateFixedHtmlView();
                 }
                 catch (Exception ex)
                 {
+                    SetFixedHtmlText(string.Empty);
                     MessageBox.Show(ex.ToString(), "Failed to render HTML");
                 }
 
@@ -255,9 +258,11 @@ private void OnUpdateHtmlTimerTick(object state)
                 try
                 {
                     _htmlPanel.Text = GetHtmlEditorText();
+                    UpdateFixedHtmlView();
                 }
                 catch (Exception ex)
                 {
+                    SetFixedHtmlText(string.Empty);
                     MessageBox.Show(ex.ToString(), "Failed to render HTML");
                 }
 
@@ -307,6 +312,23 @@ private string GetFixedHtml()
             return html;
         }
 
+        /// <summary>
+        /// Update the fixed html shown in the read-only editor.
+        /// </summary>
+        private void UpdateFixedHtmlView()
+        {
+            SetFixedHtmlText(HtmlPrettyPrinter.Format(_htmlPanel.GetHtml() ?? string.Empty), _coloredCheckBox.IsChecked.GetValueOrDefault(false));
+        }
+
+        /// <summary>
+        /// Set formatted HTML text in the fixed HTML viewer.
+        /// </summary>
+        private void SetFixedHtmlText(string text, bool color = true)
+        {
+            text = text ?? string.Empty;
+            _fixedHtmlEditor.Text = color ? HtmlSyntaxHighlighter.Process(text) : text.Replace("\n", "\\par ");
+        }
+
         /// <summary>
         /// Reload the html shown in the html editor by running coloring again.
         /// </summary>
@@ -320,7 +342,9 @@ private void OnRefreshLink_MouseLeftButtonUp(object sender, MouseButtonEventArgs
         /// </summary>
         private void OnColoredCheckbox_click(object sender, RoutedEventArgs e)
         {
-            SetColoredText(GetHtmlEditorText(), _coloredCheckBox.IsChecked.GetValueOrDefault(false));
+            var color = _coloredCheckBox.IsChecked.GetValueOrDefault(false);
+            SetColoredText(GetHtmlEditorText(), color);
+            UpdateFixedHtmlView();
         }
 
         /// <summary>
diff --git a/Source/Demo/WinForms/MainControl.Designer.cs b/Source/Demo/WinForms/MainControl.Designer.cs
index 9a4dff315..424a9a52f 100644
--- a/Source/Demo/WinForms/MainControl.Designer.cs
+++ b/Source/Demo/WinForms/MainControl.Designer.cs
@@ -31,11 +31,15 @@ private void InitializeComponent()
             this._splitContainer1 = new System.Windows.Forms.SplitContainer();
             this._samplesTreeView = new System.Windows.Forms.TreeView();
             this._splitContainer2 = new System.Windows.Forms.SplitContainer();
+            this._splitContainer3 = new System.Windows.Forms.SplitContainer();
             this._htmlPanel = new HtmlRenderer.WinForms.HtmlPanel();
             this._splitter = new System.Windows.Forms.Splitter();
             this._webBrowser = new System.Windows.Forms.WebBrowser();
+            this._inputHtmlLabel = new System.Windows.Forms.Label();
             this._reloadColorsLink = new System.Windows.Forms.LinkLabel();
             this._htmlEditor = new System.Windows.Forms.RichTextBox();
+            this._fixedHtmlLabel = new System.Windows.Forms.Label();
+            this._fixedHtmlEditor = new System.Windows.Forms.RichTextBox();
             this._htmlToolTip = new HtmlRenderer.WinForms.HtmlToolTip();
             this._splitContainer1.Panel1.SuspendLayout();
             this._splitContainer1.Panel2.SuspendLayout();
@@ -43,6 +47,9 @@ private void InitializeComponent()
             this._splitContainer2.Panel1.SuspendLayout();
             this._splitContainer2.Panel2.SuspendLayout();
             this._splitContainer2.SuspendLayout();
+            this._splitContainer3.Panel1.SuspendLayout();
+            this._splitContainer3.Panel2.SuspendLayout();
+            this._splitContainer3.SuspendLayout();
             this.SuspendLayout();
             // 
             // _splitContainer1
@@ -89,13 +96,35 @@ private void InitializeComponent()
             // 
             // _splitContainer2.Panel2
             // 
-            this._splitContainer2.Panel2.Controls.Add(this._reloadColorsLink);
-            this._splitContainer2.Panel2.Controls.Add(this._htmlEditor);
+            this._splitContainer2.Panel2.Controls.Add(this._splitContainer3);
             this._splitContainer2.Size = new System.Drawing.Size(729, 593);
             this._splitContainer2.SplitterDistance = 476;
             this._splitContainer2.TabIndex = 13;
             this._splitContainer2.TabStop = false;
             // 
+            // _splitContainer3
+            // 
+            this._splitContainer3.Dock = System.Windows.Forms.DockStyle.Fill;
+            this._splitContainer3.Location = new System.Drawing.Point(0, 0);
+            this._splitContainer3.Name = "_splitContainer3";
+            // 
+            // _splitContainer3.Panel1
+            // 
+            this._splitContainer3.Panel1.Controls.Add(this._htmlEditor);
+            this._splitContainer3.Panel1.Controls.Add(this._reloadColorsLink);
+            this._splitContainer3.Panel1.Controls.Add(this._inputHtmlLabel);
+            // 
+            // _splitContainer3.Panel2
+            // 
+            this._splitContainer3.Panel2.Controls.Add(this._fixedHtmlEditor);
+            this._splitContainer3.Panel2.Controls.Add(this._fixedHtmlLabel);
+            this._splitContainer3.Size = new System.Drawing.Size(729, 113);
+            this._splitContainer3.Panel1MinSize = 150;
+            this._splitContainer3.Panel2MinSize = 150;
+            this._splitContainer3.SplitterDistance = 364;
+            this._splitContainer3.TabIndex = 9;
+            this._splitContainer3.TabStop = false;
+            // 
             // _htmlPanel
             // 
             this._htmlPanel.AutoScroll = true;
@@ -130,12 +159,22 @@ private void InitializeComponent()
             this._webBrowser.TabIndex = 7;
             this._webBrowser.Visible = false;
             // 
+            // _inputHtmlLabel
+            // 
+            this._inputHtmlLabel.Dock = System.Windows.Forms.DockStyle.Top;
+            this._inputHtmlLabel.Location = new System.Drawing.Point(0, 0);
+            this._inputHtmlLabel.Name = "_inputHtmlLabel";
+            this._inputHtmlLabel.Size = new System.Drawing.Size(364, 24);
+            this._inputHtmlLabel.TabIndex = 9;
+            this._inputHtmlLabel.Text = "Input HTML";
+            this._inputHtmlLabel.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
+            // 
             // _reloadColorsLink
             // 
-            this._reloadColorsLink.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+            this._reloadColorsLink.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
             this._reloadColorsLink.AutoSize = true;
             this._reloadColorsLink.BackColor = System.Drawing.Color.White;
-            this._reloadColorsLink.Location = new System.Drawing.Point(666, 97);
+            this._reloadColorsLink.Location = new System.Drawing.Point(277, 6);
             this._reloadColorsLink.Name = "_reloadColorsLink";
             this._reloadColorsLink.Size = new System.Drawing.Size(44, 13);
             this._reloadColorsLink.TabIndex = 8;
@@ -146,14 +185,37 @@ private void InitializeComponent()
             // _htmlEditor
             // 
             this._htmlEditor.Dock = System.Windows.Forms.DockStyle.Fill;
-            this._htmlEditor.Location = new System.Drawing.Point(0, 0);
+            this._htmlEditor.Location = new System.Drawing.Point(0, 24);
             this._htmlEditor.Name = "_htmlEditor";
-            this._htmlEditor.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.ForcedVertical;
-            this._htmlEditor.Size = new System.Drawing.Size(729, 113);
+            this._htmlEditor.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.Both;
+            this._htmlEditor.Size = new System.Drawing.Size(364, 89);
             this._htmlEditor.TabIndex = 7;
             this._htmlEditor.Text = "";
+            this._htmlEditor.WordWrap = false;
             this._htmlEditor.TextChanged += new System.EventHandler(this.OnHtmlEditorTextChanged);
             // 
+            // _fixedHtmlLabel
+            // 
+            this._fixedHtmlLabel.Dock = System.Windows.Forms.DockStyle.Top;
+            this._fixedHtmlLabel.Location = new System.Drawing.Point(0, 0);
+            this._fixedHtmlLabel.Name = "_fixedHtmlLabel";
+            this._fixedHtmlLabel.Size = new System.Drawing.Size(361, 24);
+            this._fixedHtmlLabel.TabIndex = 10;
+            this._fixedHtmlLabel.Text = "Fixed HTML";
+            this._fixedHtmlLabel.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
+            // 
+            // _fixedHtmlEditor
+            // 
+            this._fixedHtmlEditor.Dock = System.Windows.Forms.DockStyle.Fill;
+            this._fixedHtmlEditor.Location = new System.Drawing.Point(0, 24);
+            this._fixedHtmlEditor.Name = "_fixedHtmlEditor";
+            this._fixedHtmlEditor.ReadOnly = true;
+            this._fixedHtmlEditor.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.Both;
+            this._fixedHtmlEditor.Size = new System.Drawing.Size(361, 89);
+            this._fixedHtmlEditor.TabIndex = 11;
+            this._fixedHtmlEditor.Text = "";
+            this._fixedHtmlEditor.WordWrap = false;
+            // 
             // _htmlToolTip
             // 
             this._htmlToolTip.AutoPopDelay = 15000;
@@ -176,8 +238,12 @@ private void InitializeComponent()
             this._splitContainer1.ResumeLayout(false);
             this._splitContainer2.Panel1.ResumeLayout(false);
             this._splitContainer2.Panel2.ResumeLayout(false);
-            this._splitContainer2.Panel2.PerformLayout();
             this._splitContainer2.ResumeLayout(false);
+            this._splitContainer3.Panel1.ResumeLayout(false);
+            this._splitContainer3.Panel1.PerformLayout();
+            this._splitContainer3.Panel2.ResumeLayout(false);
+            this._splitContainer3.Panel2.PerformLayout();
+            this._splitContainer3.ResumeLayout(false);
             this.ResumeLayout(false);
 
         }
@@ -187,11 +253,15 @@ private void InitializeComponent()
         private System.Windows.Forms.SplitContainer _splitContainer1;
         private System.Windows.Forms.TreeView _samplesTreeView;
         private System.Windows.Forms.SplitContainer _splitContainer2;
+        private System.Windows.Forms.SplitContainer _splitContainer3;
         private HtmlRenderer.WinForms.HtmlPanel _htmlPanel;
         private System.Windows.Forms.Splitter _splitter;
         private System.Windows.Forms.WebBrowser _webBrowser;
+        private System.Windows.Forms.Label _inputHtmlLabel;
         private System.Windows.Forms.LinkLabel _reloadColorsLink;
         private System.Windows.Forms.RichTextBox _htmlEditor;
+        private System.Windows.Forms.Label _fixedHtmlLabel;
+        private System.Windows.Forms.RichTextBox _fixedHtmlEditor;
         private HtmlRenderer.WinForms.HtmlToolTip _htmlToolTip;
     }
 }
diff --git a/Source/Demo/WinForms/MainControl.cs b/Source/Demo/WinForms/MainControl.cs
index c683e99e2..5ad5e5525 100644
--- a/Source/Demo/WinForms/MainControl.cs
+++ b/Source/Demo/WinForms/MainControl.cs
@@ -64,6 +64,7 @@ public MainControl()
             _htmlToolTip.SetToolTip(_htmlPanel, Resources.Tooltip);
 
             _htmlEditor.Font = new Font(FontFamily.GenericMonospace, 10);
+            _fixedHtmlEditor.Font = _htmlEditor.Font;
 
             LoadSamples();
 
@@ -126,6 +127,7 @@ public string GetHtml()
         public void SetHtml(string html)
         {
             _htmlPanel.Text = html;
+            UpdateFixedHtmlView();
         }
 
 
@@ -203,9 +205,11 @@ private void OnSamplesTreeViewAfterSelect(object sender, TreeViewEventArgs e)
                     _htmlPanel.AvoidImagesLateLoading = !sample.FullName.Contains("Many images");
 
                     _htmlPanel.Text = sample.Html;
+                    UpdateFixedHtmlView();
                 }
                 catch (Exception ex)
                 {
+                    SetColoredText(_fixedHtmlEditor, string.Empty);
                     MessageBox.Show(ex.ToString(), "Failed to render HTML");
                 }
 
@@ -239,9 +243,11 @@ private void OnUpdateHtmlTimerTick(object state)
                 try
                 {
                     _htmlPanel.Text = _htmlEditor.Text;
+                    UpdateFixedHtmlView();
                 }
                 catch (Exception ex)
                 {
+                    SetColoredText(_fixedHtmlEditor, string.Empty);
                     MessageBox.Show(ex.ToString(), "Failed to render HTML");
                 }
 
@@ -288,6 +294,14 @@ private string GetFixedHtml()
             return html;
         }
 
+        /// <summary>
+        /// Update the fixed html shown in the read-only editor.
+        /// </summary>
+        private void UpdateFixedHtmlView()
+        {
+            SetColoredText(_fixedHtmlEditor, HtmlPrettyPrinter.Format(_htmlPanel.GetHtml() ?? string.Empty));
+        }
+
         /// <summary>
         /// Reload the html shown in the html editor by running coloring again.
         /// </summary>
@@ -329,10 +343,18 @@ private static void OnLinkClicked(object sender, HtmlLinkClickedEventArgs e)
         /// </summary>
         private void SetColoredText(string text)
         {
-            var selectionStart = _htmlEditor.SelectionStart;
-            _htmlEditor.Clear();
-            _htmlEditor.Rtf = HtmlSyntaxHighlighter.Process(text);
-            _htmlEditor.SelectionStart = selectionStart;
+            SetColoredText(_htmlEditor, text);
+        }
+
+        /// <summary>
+        /// Set html syntax color text on the given RTF html editor.
+        /// </summary>
+        private static void SetColoredText(RichTextBox richTextBox, string text)
+        {
+            var selectionStart = richTextBox.SelectionStart;
+            richTextBox.Clear();
+            richTextBox.Rtf = HtmlSyntaxHighlighter.Process(text ?? string.Empty);
+            richTextBox.SelectionStart = Math.Min(selectionStart, richTextBox.TextLength);
         }
 
         #endregion