data[at] = '%s %s' % ['#' * item[0], data[at]]
end
-
+# We have the explicit strings "Part 1" and "Part 2" as structural
+# elements — They are to be generated upon book compilation. Nuke
+# them.
+data.delete("# Part 1")
+data.delete("# Part 2")
# Join erroneously split paragraphs: Write the contents of the line
# _preceding_ the unneeded break, the break will be removed.