+### Markdown fixup
+
+The generated Markdown file is correct, but somewhat _dirty_. I came
+up with a quick-and-dirty(er) script to fix several issues,
+`fixup.rb`, and intend to update it as needed:
+
+ ruby fixup.rb source.md dest.md
+
+I still need to add to this fixup the needed markup so that the built
+material reflects the book's structure. It will happen :-) It will, of
+course, happen earlier if you send me some patches!
+