diff --git a/SourceGen/LineListGen.cs b/SourceGen/LineListGen.cs
index dfdcfb29..95817cbc 100644
--- a/SourceGen/LineListGen.cs
+++ b/SourceGen/LineListGen.cs
@@ -956,6 +956,7 @@ private void GenerateLineList(int startOffset, int endOffset, List<Line> lines)
                         Line line = new Line(offset, 0, Line.Type.LocalVariableTable, i);
                         lines.Add(line);
                     }
+                    lines.Add(GenerateBlankLine(offset));
                 }
 
                 if (attr.IsInstructionStart) {
diff --git a/SourceGen/RuntimeData/Apple/Applesoft.sym65 b/SourceGen/RuntimeData/Apple/Applesoft.sym65
index 9546914a..9d48cf91 100644
--- a/SourceGen/RuntimeData/Apple/Applesoft.sym65
+++ b/SourceGen/RuntimeData/Apple/Applesoft.sym65
@@ -13,7 +13,8 @@ BAS_VALTYP      @ $11       ;flag for last FAC operation ($00=num, $FF=str)
 BAS_SUBFLG      @ $14       ;subscript flag ($00=allowed, $80=not)
 BAS_HCOLOR1     @ $1C       ;hi-res color mask
 BAS_COUNTH      @ $1D       ;hi-res high-order byte of step for line
-BAS_HBASL       @ $26       ;base address for hi-res drawing (2b)
+BAS_HBASL       @ $26       ;base address for hi-res drawing (lo part)
+BAS_HBASH       @ $27       ;base address for hi-res drawing (hi part)
 BAS_HMASK       @ $30       ;hi-res graphics on-the-fly bit mask
 BAS_LINNUM      @ $50       ;line number (2b)
 BAS_TEMPPT      @ $52       ;temporary point (2b)
diff --git a/SourceGen/RuntimeData/Apple/DOS33.sym65 b/SourceGen/RuntimeData/Apple/DOS33.sym65
index 5f851590..278d4705 100644
--- a/SourceGen/RuntimeData/Apple/DOS33.sym65
+++ b/SourceGen/RuntimeData/Apple/DOS33.sym65
@@ -5,9 +5,9 @@
 
 *SYNOPSIS DOS 3.3 public addresses and constants.
 
-DOSWRM      @ $3d0      ;DOS warmstart entry point
-DOSCLD      @ $3d3      ;DOS coldstart entry point
-FM          @ $3d6      ;DOS file manager entry point
-RWTS        @ $3d9      ;RWTS entry point
-LOCFPL      @ $3dc      ;loads Y/A with address of FM param list
-LOCRPL      @ $3e3      ;loads Y/A with address of RWTS IOB
+DOS_WRM         @ $3d0      ;DOS warmstart entry point
+DOS_CLD         @ $3d3      ;DOS coldstart entry point
+DOS_FM          @ $3d6      ;DOS file manager entry point
+DOS_RWTS        @ $3d9      ;RWTS entry point
+DOS_LOCFPL      @ $3dc      ;loads Y/A with address of FM param list
+DOS_LOCRPL      @ $3e3      ;loads Y/A with address of RWTS IOB
diff --git a/SourceGen/SymbolTable.cs b/SourceGen/SymbolTable.cs
index 0f16d1df..2c03f39b 100644
--- a/SourceGen/SymbolTable.cs
+++ b/SourceGen/SymbolTable.cs
@@ -43,6 +43,9 @@ public class SymbolTable : IEnumerable<Symbol> {
         /// 
         /// The type comparison ensures that project symbols appear before platform symbols,
         /// so that you can "overwrite" a platform symbol with the same value.
+        /// 
+        /// TODO(someday): sort by symbol file load order, so you can choose which set of
+        /// symbols gets to represent a given address.  Mostly useful for zero-page variables.
         /// </summary>
         private class CompareByValue : IComparer<Symbol> {
             public int Compare(Symbol a, Symbol b) {
diff --git a/SourceGen/WpfGui/EditLongComment.xaml b/SourceGen/WpfGui/EditLongComment.xaml
index 089b59d2..608c1ce6 100644
--- a/SourceGen/WpfGui/EditLongComment.xaml
+++ b/SourceGen/WpfGui/EditLongComment.xaml
@@ -68,7 +68,7 @@ limitations under the License.
                  Text="{Binding TextOutput,
                     FallbackValue=01234567890123456789012345678901234567890123456789012345678901234567890123456789}"
                  FontFamily="{StaticResource GeneralMonoFont}" VerticalScrollBarVisibility="Visible"
-                 IsReadOnly="True"/>
+                 IsReadOnly="True" Background="#f8f8f8"/>
 
         <StackPanel Grid.Row="5" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,8,0,0">
             <Button Content="OK" IsDefault="True" Width="70" Click="OkButton_Click"/>