diff --git a/SourceGen/AppSettings.cs b/SourceGen/AppSettings.cs
index 3c25e5d..40a81fa 100644
--- a/SourceGen/AppSettings.cs
+++ b/SourceGen/AppSettings.cs
@@ -125,7 +125,6 @@ namespace SourceGen {
         public const string EXPORT_COL_WIDTHS = "export-col-widths";
         public const string EXPORT_TEXT_MODE = "export-text-mode";
         public const string EXPORT_SELECTION_ONLY = "export-selection-only";
-        public const string EXPORT_INCLUDE_SYMTAB = "export-include-symtab";
 
         // Internal debugging features.
         public const string DEBUG_MENU_ENABLED = "debug-menu-enabled";
diff --git a/SourceGen/RuntimeData/Help/codegen.html b/SourceGen/RuntimeData/Help/codegen.html
index a5e56aa..9036d7e 100644
--- a/SourceGen/RuntimeData/Help/codegen.html
+++ b/SourceGen/RuntimeData/Help/codegen.html
@@ -18,6 +18,9 @@ the target assembler, will recreate the original data file exactly.
 Every assembler is different, so support must be added to SourceGen
 for each.</p>
 <p>The generation / assembly dialog can be opened with File &gt; Assemble.</p>
+<p>If you want to show code to others, perhaps by adding a page to
+your web site, you can "export" the formatted code as text or HTML.
+This is explained in more detail <a href="#export-source">below</a>.
 
 
 <h2><a name="supported">Supported Assemblers</a></h2>
@@ -299,6 +302,57 @@ code, but also needs to know how to handle the corner cases.</p>
   <li>No undocumented opcodes are supported.</li>
 </ul>
 
+
+
+<h2><a name="export-source">Exporting Source Code</a></h2>
+<p>The "export" function takes what you see in the code list in the app
+and converts it to text or HTML.  The options you've set in the app
+settings, such as capitalization, text delimiters, pseudo-opcode names,
+and operand expression style, are all taken into account.  The file
+generated is not expected to work with an actual assembler.</p>
+<p>The text output is similar to what you'd get by copying lines to the
+clipboard and pasting them into a text file, except that you have greater
+control over which columns are included.  The HTML version is augmented
+with links.</p>
+
+<p>Use File > Export to open the export dialog.  You have several options:</p>
+<ul>
+  <li><b>Include only selected lines</b>.  This allows you to choose between
+    exporting all or part of a file.  If no lines are selected, the entire
+    file will exported.  This setting does <b>not</b> affect link generation
+    for HTML output, so you my have some dead internal links if you don't
+    export the entire file.</li>
+  <li><b>Include notes</b>.  Notes are normally excluded from generated
+    sources.  Check this to include them.</li>
+  <li><b>Show &lt;Column&gt;</b>.  The leftmost five columns are optional,
+    and will not appear in the output unless the appropriate option is
+    checked.</li>
+  <li><b>Column widths</b>.  These determine the minimum widths of the
+    rightmost four columns.  These are not hard limits: if the contents
+    of the column are too wide, the next column will start farther over.
+    The width specified does not include the space character that is
+    automatically added between fields.  The widths are not used at
+    all for CSV output.</li>
+  <li><b>Text vs. CSV</b>.  For text generation, you can choose between
+    plain text and Comma-Separated Value format.  The latter is useful
+    for importing source code into another application, such as a
+    spreadsheet.</li>
+  <li><b>Overwrite CSS file</b>.  Some aspects of the HTML output's format
+    are defined by a file called "SGStyle.css", which may be shared between
+    multiple HTML files and customized.  The file is copied out
+    of the RuntimeData directory without modification.  It will be
+    created if it doesn't exist, but will not be overwritten unless this
+    box is checked.  The setting is <b>not</b> sticky, and will revert
+    to unchecked.  (Think of this as a proactive alternative to "are you
+    sure you wish to overwrite SGStyle.css?")</li>
+</ul>
+<p>Once you've picked your options, click either "Generate HTML" or
+"Generate Text", then select an output file name from the standard file
+dialog.  Any additional files generated, such as graphics for HTML pages,
+will be written to the same directory.</p>
+
+<p>All output uses UTF-8 encoding.</p>
+
 </div>
 
 <div id="footer">
diff --git a/SourceGen/RuntimeData/Help/mainwin.html b/SourceGen/RuntimeData/Help/mainwin.html
index cfae0aa..1ab19c7 100644
--- a/SourceGen/RuntimeData/Help/mainwin.html
+++ b/SourceGen/RuntimeData/Help/mainwin.html
@@ -496,11 +496,10 @@ code snippets into forum postings or documentation.  The text is
 copied from the data shown on screen, so your chosen capitalization
 and pseudo-ops will appear in the copy.</p>
 <p>Long comments are included, but notes are not.</p>
-<p>By default, the label, opcode, operand, and comment fields are included.
-From the
+<p>By default, only the label, opcode, operand, and comment fields are
+included.  From the
 <a href="settings.html#app-settings">app settings</a> dialog you can select
-a different format, "Disassembly", which also includes the address and byte
-columns.</p>
+alternative formats that include additional columns.</p>
 
 <p>A copy of all of the fields is also written to the clipboard in CSV
 format.  If you have a spreadsheet like Excel, you can use Paste Special
diff --git a/SourceGen/RuntimeData/Help/settings.html b/SourceGen/RuntimeData/Help/settings.html
index 8477a2d..9d2ac03 100644
--- a/SourceGen/RuntimeData/Help/settings.html
+++ b/SourceGen/RuntimeData/Help/settings.html
@@ -57,12 +57,13 @@ is no setting for labels, which are always case-sensitive.</p>
 <a href="mainwin.html#clipboard">copied to the clipboard</a>.  The
 "Assembler Source" format includes the rightmost columns (label,
 opcode, operand, and comment), like assembly source code does.  The
-"Disassembly" format adds the address and bytes on the left.</p>
+"Disassembly" format adds the address and bytes on the left.  Use
+the "All Columns" format to get all columns.</p>
 
 <p>The "add spaces in bytes column" checkbox changes the format of the
 hex data in the code list "bytes" column from dense (<code>20edfd</code>)
-to spaced (<code>20 ed fd</code>).  This also affects the way the
-"Disassembly" copy &amp; paste format looks.</p>
+to spaced (<code>20 ed fd</code>).  This also affects the format of
+clipboard copies and exports.</p>
 
 
 <h3><a name="appset-textdelim">Text Delimiters</a></h3>
@@ -88,7 +89,7 @@ and end of the operand.  For string operands, the prefix is added to the
 start of the first line, and suffixes aren't allowed.
 <p>These options change the way the code list looks on screen.  They
 do not affect generated code, which must use the delimiter characters
-specified by the assembler.</p>
+specified by the chosen assembler.</p>
 
 
 <h3><a name="appset-asmconfig">Asm Config</a></h3>
diff --git a/SourceGen/WpfGui/Export.xaml b/SourceGen/WpfGui/Export.xaml
index 106f1e8..86a38b7 100644
--- a/SourceGen/WpfGui/Export.xaml
+++ b/SourceGen/WpfGui/Export.xaml
@@ -99,7 +99,6 @@ limitations under the License.
 
         <GroupBox Grid.Row="2" Header="HTML Options" Padding="2,4">
             <StackPanel>
-                <CheckBox Content="Include symbol table" IsChecked="{Binding IncludeSymbolTable}"/>
                 <CheckBox Content="Overwrite CSS file" Margin="0,2,0,0" IsChecked="{Binding OverwriteCss}"/>
             </StackPanel>
         </GroupBox>
diff --git a/SourceGen/WpfGui/Export.xaml.cs b/SourceGen/WpfGui/Export.xaml.cs
index 6a1b143..163349b 100644
--- a/SourceGen/WpfGui/Export.xaml.cs
+++ b/SourceGen/WpfGui/Export.xaml.cs
@@ -153,12 +153,6 @@ namespace SourceGen.WpfGui {
             set { mTextModeCsv = value; OnPropertyChanged(); }
         }
 
-        private bool mIncludeSymbolTable;
-        public bool IncludeSymbolTable {
-            get { return mIncludeSymbolTable; }
-            set { mIncludeSymbolTable = value; OnPropertyChanged(); }
-        }
-
         private bool mOverwriteCss;
         public bool OverwriteCss {
             get { return mOverwriteCss; }
@@ -208,8 +202,6 @@ namespace SourceGen.WpfGui {
             ShowFlags = AppSettings.Global.GetBool(AppSettings.EXPORT_SHOW_FLAGS, false);
             ShowAttr = AppSettings.Global.GetBool(AppSettings.EXPORT_SHOW_ATTR, false);
             SelectionOnly = AppSettings.Global.GetBool(AppSettings.EXPORT_SELECTION_ONLY, false);
-            IncludeSymbolTable = AppSettings.Global.GetBool(AppSettings.EXPORT_INCLUDE_SYMTAB,
-                false);
 
             int[] colWidths = new int[] { 9, 8, 11, 72 };   // 100-col output
             string colStr = AppSettings.Global.GetString(AppSettings.EXPORT_COL_WIDTHS, null);
@@ -247,7 +239,6 @@ namespace SourceGen.WpfGui {
             AppSettings.Global.SetBool(AppSettings.EXPORT_SHOW_FLAGS, ShowFlags);
             AppSettings.Global.SetBool(AppSettings.EXPORT_SHOW_ATTR, ShowAttr);
             AppSettings.Global.SetBool(AppSettings.EXPORT_SELECTION_ONLY, SelectionOnly);
-            AppSettings.Global.SetBool(AppSettings.EXPORT_INCLUDE_SYMTAB, IncludeSymbolTable);
             int[] colWidths = new int[] {
                 AsmLabelColWidth, AsmOpcodeColWidth, AsmOperandColWidth, AsmCommentColWidth
             };