Show '\011', '\012', and '\015' as '\t', '\n', '\r' in strings.
Switch from octal escapes to hex escapes for other nonprintable characters.
diff --git a/Doc/lib/libpyexpat.tex b/Doc/lib/libpyexpat.tex
index 27edc08..b50c52d 100644
--- a/Doc/lib/libpyexpat.tex
+++ b/Doc/lib/libpyexpat.tex
@@ -272,11 +272,11 @@
Start element: child1 {'name': 'paul'}
Character data: 'Text goes here'
End element: child1
-Character data: '\012'
+Character data: '\n'
Start element: child2 {'name': 'fred'}
Character data: 'More text'
End element: child2
-Character data: '\012'
+Character data: '\n'
End element: parent
\end{verbatim}