Use hex codes instead of control characters in the editor source.

dmsc · dmsc · commit c78eee2cc1d4 · 2025-04-21T09:14:53.000-04:00
This makes editing the file in modern editors safer. Fixes #110
diff --git a/src/editor.bas b/src/editor.bas
@@ -95,7 +95,7 @@ endproc
 PROC ClrTopLine
   exec SaveLine
   pos. 0,0
-  ? "��";
+  ? ""$9C$9D"";
 ENDPROC
 
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