diff --git a/pdf/remove_links.py b/pdf/remove_links.py
index 2ad1bc8..2f97aef 100755
--- a/pdf/remove_links.py
+++ b/pdf/remove_links.py
@@ -7,14 +7,14 @@ from pathlib import Path
 
 
 MATCHES = {
-    '<strong>Module <a href="#operator">operator</a> provides functions itemgetter() and mul() that offer the same functionality as <a href="#lambda">lambda</a> expressions above.</strong>': '<strong>Module operator (p. 31) provides functions itemgetter() and mul() that offer the same functionality as lambda expressions (p. 11) above.</strong>',
+    '<strong>Module <a href="#operator">operator</a> provides functions itemgetter() and mul() that offer the same functionality as <a href="#lambda">lambda</a> expressions above.</strong>': '<strong>Module \'operator\' (p. 31) provides functions itemgetter() and mul() that offer the same functionality as lambda expressions (p. 11) above.</strong>',
     '<strong><code class="python hljs"><span class="hljs-string">\'!r\'</span></code> calls object\'s <a href="#class">repr()</a> method, instead of <a href="#class">str()</a>, to get a string.</strong>': '<strong><code class="python hljs"><span class="hljs-string">\'!r\'</span></code> calls object\'s repr() method, instead of str(), to get a string (p. 14).</strong>',
     '<strong>Default_factory can be any <a href="#callable">callable</a>.</strong>': '<strong>Default_factory can be any callable (p. 17).</strong>',
     '<strong>Iterators returned by the <a href="#iterator">iter()</a> function, such as list_iterator and set_iterator.</strong>': '<strong>Iterators returned by the iter() function, such as list_iterator and set_iterator (p. 3).</strong>',
     '<strong>Objects returned by the <a href="#itertools">itertools</a> module, such as count, repeat and cycle.</strong>': '<strong>Objects returned by the itertools module, such as count, repeat and cycle (p. 3).</strong>',
     '<strong>Generators returned by the <a href="#generator">generator functions</a> and <a href="#comprehensions">generator expressions</a>.</strong>': '<strong>Generators returned by the generator functions (p. 4) and generator expressions (p. 11).</strong>',
     '<strong>File objects returned by the <a href="#open">open()</a> function, etc.</strong>': '<strong>File objects returned by the open() function (p. 22), etc.</strong>',
-    '<strong>Another solution in this particular case is to use functions and_() and or_() from the module <a href="#operator">operator</a>.</strong>': '<strong>Another solution in this particular case is to use functions and_() and or_() from the module operator (p. 31).</strong>',
+    '<strong>Another solution in this particular case is to use functions and_() and or_() from the module <a href="#operator">operator</a>.</strong>': '<strong>Another solution in this particular case is to use functions and_() and or_() from the module \'operator\' (p. 31).</strong>',
     '<strong>Functions report OS related errors by raising either OSError or one of its <a href="#exceptions-1">subclasses</a>.</strong>': '<strong>Functions report OS related errors by raising OSError or one of its subclasses (p. 23).</strong>',
     '<strong>Bools will be stored and returned as ints and dates as <a href="#encode">ISO formatted strings</a>.</strong>': '<strong>Bools will be stored and returned as ints and dates as ISO formatted strings (p. 9).</strong>',
     '<strong>Asyncio module also provides its own <a href="#queue">Queue</a>, <a href="#semaphoreeventbarrier">Event</a>, <a href="#lock">Lock</a> and <a href="#semaphore-event-barrier">Semaphore</a> classes.</strong>': '<strong>Asyncio module also provides its own Queue, Event, Lock and Semaphore classes (p. 30).</strong>',