diff --git a/pdf/remove_links.py b/pdf/remove_links.py
index 3134eb3..17a4d80 100755
--- a/pdf/remove_links.py
+++ b/pdf/remove_links.py
@@ -23,6 +23,7 @@ MATCHES = {
     '<strong>For XML and binary Excel files (xlsx, xlsm and xlsb) use <a href="#dataframeplotencodedecode">Pandas</a> library.</strong>': '<strong>For XML and binary Excel files (xlsx, xlsm and xlsb) use Pandas library (p. 46).</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>An object with the same interface called ProcessPoolExecutor provides true parallelism by running a separate interpreter in each process. Arguments/results must be <a href="#pickle">pickable</a>.</strong>': '<strong>An object with the same interface called ProcessPoolExecutor provides true parallelism by running a separate interpreter in each process. Arguments/results must be pickable.</strong>',
+    '<strong>ProcessPoolExecutor provides true parallelism, but everything sent to/from workers must be <a href="#pickle">pickable</a>. Queues must be sent using executor\'s \'initargs\' and \'initializer\' parameters.</strong>': '<strong>ProcessPoolExecutor provides true parallelism, but everything sent to/from workers must be pickable. Queues must be sent using executor\'s \'initargs\' and \'initializer\' parameters.</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="#semaphoreeventbarrier">Semaphore</a> classes.</strong>': '<strong>Asyncio module also provides its own Queue, Event, Lock and Semaphore classes (p. 30).</strong>',
     '<strong>A WSGI server like <a href="https://flask.palletsprojects.com/en/latest/deploying/waitress/">Waitress</a> and a HTTP server such as <a href="https://flask.palletsprojects.com/en/latest/deploying/nginx/">Nginx</a> are needed to run globally.</strong>': '<strong>A WSGI server like Waitress and a HTTP server such as Nginx are needed to run globally.</strong>',
     '<strong>The "latest and greatest" profiler that can also monitor GPU usage is called <a href="https://github.com/plasma-umass/scalene">Scalene</a>.</strong>': '<strong>The "latest and greatest" profiler that can also monitor GPU usage is called Scalene.</strong>',