diff --git a/src/com/bytezone/diskbrowser/applefile/ApplesoftBasicProgram.java b/src/com/bytezone/diskbrowser/applefile/ApplesoftBasicProgram.java
index f8fd136..9b5be7d 100644
--- a/src/com/bytezone/diskbrowser/applefile/ApplesoftBasicProgram.java
+++ b/src/com/bytezone/diskbrowser/applefile/ApplesoftBasicProgram.java
@@ -241,7 +241,20 @@ public class ApplesoftBasicProgram extends BasicProgram implements ApplesoftCons
         if (Utility.isHighBitSet (b))
           text.append (String.format (" %s ", ApplesoftConstants.tokens[b & 0x7F]));
         else
-          text.append ((char) b);
+          switch (b)
+          {
+            case Utility.ASCII_CR:
+              text.append ("\n");
+              break;
+
+            case Utility.ASCII_BACKSPACE:
+              if (text.length () > 0)
+                text.deleteCharAt (text.length () - 1);
+              break;
+
+            default:
+              text.append ((char) b);
+          }
 
       assert ptr == nextLine - loadAddress;
       //      ptr = nextLine - loadAddress;
@@ -466,7 +479,7 @@ public class ApplesoftBasicProgram extends BasicProgram implements ApplesoftCons
     }
 
     if (basicPreferences.showCalls && !callLines.isEmpty ())
-      showSymbolsLeft (fullText, callLines, "CALL");
+      showSymbolsLeftRight (fullText, callLines, "   CALL");
   }
 
   // ---------------------------------------------------------------------------------//
@@ -544,6 +557,38 @@ public class ApplesoftBasicProgram extends BasicProgram implements ApplesoftCons
     }
   }
 
+  // ---------------------------------------------------------------------------------//
+  private void showSymbolsLeftRight (StringBuilder fullText,
+      Map<String, List<Integer>> map, String heading)
+  // ---------------------------------------------------------------------------------//
+  {
+    heading (fullText, formatLeft, heading);
+
+    for (String symbol : map.keySet ())                   // left-justify strings
+    {
+      if (isNumeric (symbol))
+        appendLineNumbers (fullText, String.format (formatRight, symbol),
+            map.get (symbol));
+      else if (symbol.length () <= 7)
+        appendLineNumbers (fullText, String.format (formatLeft, symbol),
+            map.get (symbol));
+      else
+        appendLineNumbers (fullText, symbol + " ", map.get (symbol));
+    }
+  }
+
+  // ---------------------------------------------------------------------------------//
+  private boolean isNumeric (String value)
+  // ---------------------------------------------------------------------------------//
+  {
+    byte[] bytes = value.getBytes ();
+    int start = value.charAt (0) == Utility.ASCII_MINUS ? 1 : 0;
+    for (int i = start; i < bytes.length; i++)
+      if (!Utility.isPossibleNumber (bytes[i]))
+        return false;
+    return true;
+  }
+
   // ---------------------------------------------------------------------------------//
   private void showSymbolsRight (StringBuilder fullText, Map<Integer, List<Integer>> map,
       String heading)
diff --git a/src/com/bytezone/diskbrowser/applefile/SourceLine.java b/src/com/bytezone/diskbrowser/applefile/SourceLine.java
index bf06924..5779adb 100644
--- a/src/com/bytezone/diskbrowser/applefile/SourceLine.java
+++ b/src/com/bytezone/diskbrowser/applefile/SourceLine.java
@@ -70,14 +70,14 @@ public class SourceLine implements ApplesoftConstants
           break;
 
         case TOKEN_REM:
-          if (ptr != startPtr + 1)      // REM appears mid-line (should follow a colon)
-          {
-            System.out.println ("mid-line REM token");
+          if (ptr == startPtr + 1)
+            inRemark = true;
+          else
+          {     // REM appears mid-line (should follow a colon)
+            System.out.printf ("%5d %s%n", lineNumber, "mid-line REM token");
             sublines.add (new SubLine (this, startPtr, (ptr - startPtr) - 1));
             startPtr = ptr - 1;
           }
-          else
-            inRemark = true;
 
           break;
 
diff --git a/src/com/bytezone/diskbrowser/applefile/SubLine.java b/src/com/bytezone/diskbrowser/applefile/SubLine.java
index a22d2fe..28502b8 100644
--- a/src/com/bytezone/diskbrowser/applefile/SubLine.java
+++ b/src/com/bytezone/diskbrowser/applefile/SubLine.java
@@ -108,8 +108,7 @@ public class SubLine implements ApplesoftConstants
         if (b == Utility.ASCII_QUOTE)      // ignore strings
         {
           inQuote = false;
-          String s = new String (buffer, stringPtr - 1, ptr - stringPtr + 1);
-          stringsText.add (s);
+          addString (stringPtr, ptr);
         }
         continue;
       }
@@ -151,9 +150,20 @@ public class SubLine implements ApplesoftConstants
       }
     }
 
+    if (inQuote)      // unterminated string
+      addString (stringPtr, ptr);
+
     checkVar (var, (byte) 0);
   }
 
+  // ---------------------------------------------------------------------------------//
+  private void addString (int stringPtr, int ptr)
+  // ---------------------------------------------------------------------------------//
+  {
+    String s = new String (buffer, stringPtr - 1, ptr - stringPtr + 1);
+    stringsText.add (s);
+  }
+
   // ---------------------------------------------------------------------------------//
   private void checkFunction (String var, byte terminator)
   // ---------------------------------------------------------------------------------//
@@ -342,7 +352,10 @@ public class SubLine implements ApplesoftConstants
             continue;
           b = (byte) chunk.charAt (0);
           if (Utility.isDigit (b) || b == Utility.ASCII_MINUS || b == Utility.ASCII_DOT)
-            addNumber (chunk);
+          {
+            if (!addNumber (chunk))
+              stringsText.add (chunk);
+          }
           else if (Utility.isLetter (b) || b == Utility.ASCII_QUOTE)
             stringsText.add (chunk);
           else
@@ -354,7 +367,7 @@ public class SubLine implements ApplesoftConstants
   }
 
   // ---------------------------------------------------------------------------------//
-  private void addNumber (String var)
+  private boolean addNumber (String var)
   // ---------------------------------------------------------------------------------//
   {
     try
@@ -375,8 +388,10 @@ public class SubLine implements ApplesoftConstants
     }
     catch (NumberFormatException nfe)
     {
-      System.out.printf ("NFE: %s%n", var);
+      //      System.out.printf ("NFE1: %s%n", var);
+      return false;
     }
+    return true;
   }
 
   // ---------------------------------------------------------------------------------//
@@ -438,7 +453,7 @@ public class SubLine implements ApplesoftConstants
     }
     catch (NumberFormatException e)
     {
-      System.out.printf ("NFE: %s%n", s);
+      System.out.printf ("NFE2: %s%n", s);
     }
 
     return lineNumbers;