diff --git a/002/codex-002.tex b/002/codex-002.tex
index b893906..2229e11 100644
--- a/002/codex-002.tex
+++ b/002/codex-002.tex
@@ -387,4 +387,8 @@ You'll also notice that there is no border spacing around the second formula. Th
 
 I'm not going to forget about the first method, though. This could be handy if I wanted to create something (such as a business card) that is a standard size that I want to repeat, or if I want to print on a smaller, non-typical format that LaTeX doesn't have a built-in page size for. I have a few ideas where I might use this; I'll try them out and report back in a later issue.
 
+\medskip
+
+\noindent Also, for reasons I don't know yet, the typical way of starting and ending a math environment in LaTeX (i.e., \verb|\[...\]|. Only \verb|$...$| and \verb|\begin{math}| \verb|...\end{math}| do.
+
 \end{document}
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