Put some stuff in a "Navigate" menu

Created a Navigate menu, and put the menu items for Find and Go To
in it.  Added menu items for nav-forward and nav-backward, which
until now were only available as toolbar buttons.

SourceGen/RuntimeData/Help/mainwin.html

@@ -327,14 +327,14 @@ especially handy for undocumented instructions.</p>
 on your mouse, or by left-clicking and dragging the scroll bar.  You
 can also use PgUp/PgDn and the arrow keys.</p>
 
-<p>Use Edit &gt; Find to search for text.  This performs a case-insensitive
+<p>Use Navigate &gt; Find to search for text.  This performs a case-insensitive
 text search on the label, opcode, operand, and comment fields.
-Use Edit &gt; Find Next to find the next match, and
+Use Navigate &gt; Find Next to find the next match, and
-Edit &gt; Find Previous to find the previous match.  Note "next" is
+Navigate &gt; Find Previous to find the previous match.  Note "next" is
 always downward, and "previous" is always upward, regardless of the
 direction of the initial search chosen in the Find dialog.</p>
 
-<p>Use Edit &gt; Go To to jump to an offset, address, or label.  Remember
+<p>Use Navigate &gt; Go To to jump to an offset, address, or label.  Remember
 that offsets and addresses are always hexadecimal, and offsets start
 with a '+'.  If you have a label that is also a valid hexadecimal
 address, like "FEED", the label takes precedence.  To jump to the address
@@ -343,7 +343,8 @@ write "$FEED" instead.</p>
 <p>When you jump around, by double-clicking on an opcode or an entry
 in one of the side windows, the currently-selected line is added to
 a navigation stack.  You can use the arrows on the toolbar to navigate
-forward or backward.  (You can use Alt+Left/Right Arrow, or
+forward or backward, or Navigate &gt; Nav Forward and
+Navigate &gt; Nav Backward.  (You can use Alt+Left/Right Arrow, or
 Ctrl+- / Ctrl+Shift+-, as keyboard shortcuts.)</p>
 
 

SourceGen/RuntimeData/Help/tutorials.html

@@ -106,12 +106,12 @@ row of buttons.  Make sure "Auto" and "Addr" are selected.  You should see
 three labels in the window (L1002, L1014, L1017).  Double-click on L1014.  The
 selection jumps to the appropriate line.</p>
 
-<p>Select Edit &gt; Find.  Type "hello", and hit Enter.  The selection will
+<p>Select Navigate &gt; Find.  Type "hello", and hit Enter.  The selection will
 move to address $100E, which is a string that says "hello!".  You can use
-Edit &gt; Find Next to try to find the next occurrence (there isn't one).  You
+Navigate &gt; Find Next to try to find the next occurrence (there isn't one).  You
 can search for any text that appears in the rightmost columns (label, opcode,
 operand, comment).</p>
-<p>Select Edit &gt; Go To.  You can enter a label, address, or file offset.
+<p>Select Navigate &gt; Go To.  You can enter a label, address, or file offset.
 Enter "100b" to set the selection to $100B.</p>
 
 <p>Near the top-left of the SourceGen window is a set of toolbar icons.
@@ -174,7 +174,7 @@ to $2000, then jumping to $2000.  It appears to be relocating the next
 part of the code before
 executing it.  We want to let the disassembler know what's going on, so
 select the line at address $1017 and then
-Edit &gt; Set Address.  (Or double-click the "1017" in the Addr column.)
+Actions &gt; Set Address.  (Or double-click the "1017" in the Addr column.)
 In the Set Address dialog, type "2000", and hit Enter.)</p>
 
 <p>Note the way the code list has changed.  When you changed the address,
@@ -363,7 +363,7 @@ that looks for strings and .FILL regions, so now each uncategorized byte is
 on its own line.</p>
 <p>You could select the first two lines and use Actions &gt; Edit Operand
 to format them as a 16-bit little-endian hex value, but there's a shortcut:
-select only the first line of code, then Edit &gt; Format As Word (Ctrl+W).  It
+select only the first line of code, then Actions &gt; Format As Word (Ctrl+W).  It
 automatically grabbed the following byte and combined them.  Since we believe
 $2000 is the load address for everything that follows, click on the line
 with address $1002, select Actions &gt; Set Address, and enter "2000".  With

SourceGen/WpfGui/MainWindow.xaml

@@ -321,12 +321,7 @@ limitations under the License.
                 <MenuItem Command="{StaticResource RedoCmd}"/>
                 <Separator/>
                 <MenuItem Command="Copy"/>
-                <Separator/>
                 <MenuItem Command="{StaticResource SelectAllCmd}"/>
-                <MenuItem Command="Find"/>
-                <MenuItem Command="{StaticResource FindNextCmd}"/>
-                <MenuItem Command="{StaticResource FindPreviousCmd}"/>
-                <MenuItem Command="{StaticResource GotoCmd}"/>
                 <Separator/>
                 <MenuItem Command="{StaticResource EditHeaderCommentCmd}"/>
                 <MenuItem Command="Properties" Header="Project Properties..."/>
@@ -336,6 +331,15 @@ limitations under the License.
                 <Separator/>
                 <MenuItem Command="{StaticResource EditAppSettingsCmd}"/>
             </MenuItem>
+            <MenuItem Header="_Navigate">
+                <MenuItem Command="{StaticResource NavigateForwardCmd}"/>
+                <MenuItem Command="{StaticResource NavigateBackwardCmd}"/>
+                <MenuItem Command="{StaticResource GotoCmd}"/>
+                <Separator/>
+                <MenuItem Command="Find"/>
+                <MenuItem Command="{StaticResource FindNextCmd}"/>
+                <MenuItem Command="{StaticResource FindPreviousCmd}"/>
+            </MenuItem>
             <MenuItem Name="actionsMenu" Header="_Actions">
                 <MenuItem Command="{StaticResource EditAddressCmd}"/>
                 <MenuItem Command="{StaticResource EditStatusFlagsCmd}"/>