diff --git a/terminology/terminology.tex b/terminology/terminology.tex
index 6bf8a9c..ab80541 100644
--- a/terminology/terminology.tex
+++ b/terminology/terminology.tex
@@ -34,6 +34,7 @@ \section{Glyph and glyph block}
 \emph{Glyphs} are usually arranged in regular rectangular shapes called a \emph{glyph block}.
 \textcquote[23]{macrilooper2003}{The rectangular shape of \emph{glyph blocks} results from 
 the arrangement of texts into rows and columns}.
+\todo{image/drawing which shows rows and columns of glyphs}
 
 \section{Analysis of an unknown writing system}
 In distinguishing distinctive signs and their allographs, prior to linguistic decipherment,