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diff --git a/document.tex b/document.tex
index 44f8e04..bd2a05b 100644
--- a/document.tex
+++ b/document.tex
@@ -31,6 +31,12 @@
 \usepackage{subcaption}
 \usepackage{xltabular}
 
+\usepackage{colortbl}
+\usepackage{xcolor}
+
+\definecolor{na}{gray}{0.85}   % color for unused cells
+\newcommand{\na}{\cellcolor{na}}
+
 \newcommand\textdialogue[1]{«{#1}»}
 \newcommand\textquot[1]{`{#1}'}
 \newcommand\textcitation[1]{``#1''}
diff --git a/part.a-language-for-the-hazn.tex b/part.a-language-for-the-hazn.tex
index c8cbb82..af8b6d1 100644
--- a/part.a-language-for-the-hazn.tex
+++ b/part.a-language-for-the-hazn.tex
@@ -15,9 +15,20 @@ I am not by far a zoologist or student in any way, so I chose the sounds on the
 \par Because of that, standard transliteration rules have been created that approximate the actual sounds, which will be indicated by \textphonlitex{X} where \textquot{X} will be the sound in question, mapped in Latin characters with conventions as defined in \autoref{sec:conventions}.
 
 
-\section{Conventions}
-\label{sec:conventions}
+\section{Conventions}\label{sec:conventions}
 
 Hazns can produce a wide variety of sounds, from ones similar to human's, to more unfamiliar noises which need approximations.
-For instance, because their muzzle is longer than a human's alveolar ridge, they can move the tongue in different ways and produce deeper vocalizations.
+For instance, because their muzzle is longer than a human's alveolar ridge, they can move the tongue in different ways and produce more articulated vocalizations.
+
+\subsection{IPA Extensions for hazn people}
+
+\begin{xltabular}{\textwidth}{l|XX}
+  \caption{Articulations}
+  \toprule
+  Name                 & Symbol & Description
+  \midrule
+  \endhead
+  Hissed               & ◌͙͡◌     & This diacritic represents a quick short sequence of post-alveolar affricated blows of air, similar in texture to a \textquot{high-pitched} \textphon{χ}. \\
+  \bottomrule
+\end{xltabular}