diff --git a/IV/mj-msc.tex b/IV/mj-msc.tex
index 909561f..3415d22 100644
--- a/IV/mj-msc.tex
+++ b/IV/mj-msc.tex
@@ -433,8 +433,8 @@ following the rules of the article.
 \end{figure}
 
 The self-line-crossing may happen not by the neighboring bend, but by any other
-bend in the line. For example, the baseline of bend A<->B may cross different
-bends in between, as depicted in figure~\onpage{fig:ascii-selfcross}.
+bend in the line. For example, the baseline of the bend $(A, B)$ may cross
+different bends in between, as depicted in figure~\onpage{fig:ascii-selfcross}.
 
 \begin{figure}[h]
     \centering
@@ -496,8 +496,8 @@ We strongly believe in the ability to reproduce the results is critical for any
 
 This was tested on Linux Debian 11 with upstream packages only.
 
-%\subsection{Algorithm code listings}
-%\inputminted[fontsize=\small]{plpgsql}{wm.sql}
+\subsection{Algorithm code listings}
+\inputminted[fontsize=\small]{plpgsql}{wm.sql}
 
 \end{appendices}
 \end{document}
diff --git a/IV/wm.sql b/IV/wm.sql
index da3023a..a2c8f6e 100644
--- a/IV/wm.sql
+++ b/IV/wm.sql
@@ -254,7 +254,8 @@ begin
 
       -- To understand the block below, I suggest you take a pencil and paper,
       -- draw a self-crossing bend (fig6 from the article works well), and
-      -- figure out what happens here, by hand.
+      -- figure out what happens here, by hand. I know it's hard to follow.
+      -- Apologies.
       prev_length = array_length(bends, 1);
       if j < i then
         -- remove first vertex of the following bend, because the last