message format placeholder added

Author: christianparpart

spec/vt-good-image-protocol.tex

@@ -404,6 +404,10 @@ \section{Syntax} % {{{
 
 This section maps each semantic action to actual VT sequences.
 
+\subsection{DCS Message Format}
+
+TODO: describe the Message format here.
+
 \subsection{Upload Image}
 
 Syntax: \code{DCS <numerical parameters> u <named parameters> ST}