Adds DomTerm's image support to prior art section.

Author: christianparpart

spec/vt-good-image-protocol.tex

@@ -183,6 +183,22 @@ \subsection{Kitty image protocol}
 as well as client side, yet allowing future extensions to this protocol
 without breaking compatibility to existing implementations.
 
+\subsection{DomTerm's inline image support}
+
+\begin{itemize}
+    \item DomTerm's image support appeared in 2016.
+    \item No explicit image protocol but a "insert HTML"-protocol that does support images.
+    \item Specification is in the source code repository's \texttt{README.md} file.
+\end{itemize}
+
+The typical way to insert an image is to insert an HTML <img> element,
+with the src attribute using a data: URL scheme,
+with the actual data inline as base64.
+
+Any image format supported by the underlying browser engine is allowed.
+
+The \texttt{<img>} element can contain attributes such as width, height, alt
+and options to add scrollbars.
 % }}}
 \section{Requirements} % {{{
 
@@ -702,7 +718,7 @@ \section{References} % {{{
     \item \label{ref:twg-gip}Good Image Protocol, \url{https://gitlab.freedesktop.org/terminal-wg/specifications/-/issues/26}
     \item \label{ref:image-sixel}Sixel Image Protocol, \url{https://vt100.net/docs/vt3xx-gp/chapter14.html}
     \item \label{ref:image-item2}iTerm2's image protocol, \url{https://iterm2.com/documentation-images.html}
-    \item \label{ref:image-terminology}Terminology's image protocol, \url{https://www.enlightenment.org/docs/apps/terminology.md} \todo{Terminology image protocol spec not found. ;-(}
+    \item \label{ref:image-terminology}Terminology's image protocol, \url{https://github.com/borisfaure/terminology/blob/master/README.md#available-commands}
     \item \label{ref:image-kitty}Kitty's image protocol, \url{https://sw.kovidgoyal.net/kitty/graphics-protocol.html}
 \end{enumerate}
 % }}}