diff --git a/wiki/unix/X.m4 b/wiki/unix/X.m4
index 3d21d74..a7b77f7 100644
--- a/wiki/unix/X.m4
+++ b/wiki/unix/X.m4
@@ -8,6 +8,22 @@ X is a graphical windowing system that can be used on _ref(`#linux'), FreeBSD, O
 X is not the only windowing system; _man(`twin(1)') exists for windowed multitasking within a framebuffer and Wayland is another windowing system intended to replace X.
 </P>
 
+_subheader(`Anki')
+<P>
+Anki is the de facto standard flashcards studying programming given its popularity and lack of competition.
+Anki uses spaced repetition to make sure the user remembers what they study for the long term.
+</P>
+_subsubheader(`_code(`ModuleNotFoundError: No module named `'aqt`'')')
+<P>
+The module _code(`aqt') isn't findable in the environment variable _code(`PYTHONPATH').
+Check each directory in the pattern _file(`$PREFIX/lib/python*/site-packages') for the directory _file(`aqt/'),
+and if it's there, try setting _code(`PYTHONPATH') to that corresponding _file(`site-packages') directory.
+</P>
+<P>
+This bug exists on postmarketOS 22.12 (aarch64, based on Alpine Linux 3.17; anki-2.1.49-r2);
+the _code(`PYTHONPATH') fix works as _code(`PYTHONPATH=/usr/lib/python3.11/site-packages/ anki').
+</P>
+
 _subheader(`Mail')
 <P>
 The (formerly Mozilla) Thunderbird mail suite is a popular though maximal choice.