diff --git a/II/Referatas/Makefile b/II/Referatas/Makefile
index bad630f..fdb8296 100644
--- a/II/Referatas/Makefile
+++ b/II/Referatas/Makefile
@@ -17,18 +17,24 @@ GEN2 = $(addsuffix .pdf, \
 
 mj-referatas.pdf: mj-referatas.tex version.tex bib.bib zeimena.pdf \
 	sinewave1.pdf sinewave2.pdf crossing.pdf $(GEN1) $(GEN2)
-	latexmk -g -pdf $<
+	latexmk -shell-escape -g -pdf $<
 
 define algo2img
 db/.faux_$(1)-$(2)-%: $(2).sql db/.faux_ready
-	./managedb -- --echo-all -v ON_ERROR_STOP=1 -v src=$(1) -v tolerance=$$* -v tbl=$(1)_$(2)_$$* -f $(2).sql
+	./managedb -- --echo-all \
+		-v ON_ERROR_STOP=1 \
+		-v src=$(1) \
+		-v tolerance=$$* \
+		-v tbl=$(1)_$(2)_$$* \
+		-f $(2).sql
 	touch $$@
 $(1)-$(2)-%.pdf: layer2img.py db/.faux_$(1)-$(2)-%
 	./layer2img.py --group2-table=$(1)_$(2)_$$* --size=$(3) --outfile $$@
 endef
 define algo2overlay
 overlaid-$(1)-$(2)-%.pdf: layer2img.py db/.faux_$(1)-$(2)-%
-	./layer2img.py $(3) --group1-table=$(1) --group2-table=$(1)_$(2)_$$* --outfile $$@
+	./layer2img.py $(3) --group1-table=$(1) --group2-table=$(1)_$(2)_$$* \
+		--outfile $$@
 endef
 define gpkg2pdf
 $(1): $(2) ./layer2img.py
@@ -41,7 +47,8 @@ $(eval $(call algo2img,zeimena,douglas,210x297))
 $(eval $(call algo2img,zeimena,visvalingam,210x297))
 $(eval $(call gpkg2pdf,sinewave1.pdf,sinewave1.gpkg,--size=$(SINEWAVE_SIZE)))
 $(eval $(call gpkg2pdf,sinewave2.pdf,sinewave2.gpkg,--size=$(SINEWAVE_SIZE)))
-$(eval $(call gpkg2pdf,zeimena.pdf,zeimena.gpkg rectangle.gpkg,--size=134x191 --group2-infile rectangle.gpkg))
+$(eval $(call gpkg2pdf,zeimena.pdf,zeimena.gpkg rectangle.gpkg,\
+	--size=134x191 --group2-infile rectangle.gpkg))
 $(eval $(call gpkg2pdf,crossing.pdf,zeimena.gpkg,--size=105x74 --clip $(CROSSING)))
 $(eval $(call algo2overlay,zeimena,douglas,--size 148x105 --clip $(CROSSING)))
 $(eval $(call algo2overlay,zeimena,visvalingam,--size 148x105 --clip $(CROSSING)))
diff --git a/II/Referatas/mj-referatas.tex b/II/Referatas/mj-referatas.tex
index 01016b0..f9aaf55 100644
--- a/II/Referatas/mj-referatas.tex
+++ b/II/Referatas/mj-referatas.tex
@@ -23,6 +23,7 @@
 \usepackage{tabularx}
 \usepackage{float}
 \usepackage{tikz}
+\usepackage{minted}
 \usetikzlibrary{er,positioning}
 \input{version}
 
@@ -385,18 +386,49 @@ As noted in parameter~\ref{itm:2} on page~\pageref{itm:2}, it would be useful
 to have a formula mapping {\DP} tolerance to {\VW}. That way, visual
 comparisons between line simplification algorithms could be more objective.
 
-
 \printbibliography
 
-\iffalse
-may enable this before publishing
 \begin{appendices}
+
+\section{Žeimena and Lakaja in context}
+
 \begin{figure}[H]
     \centering
     \includegraphics[width=148mm]{zeimena-pretty}
     \caption{Lakaja and Žeimena river in context}
 \end{figure}
-\end{appendices}
-\fi
 
+\section{Code listings}
+
+For the curious users it may be useful to see how the analysis was executed.
+Also, given the source listings, it should be relatively straightforward to
+re-run the same analysis on a different area.
+
+\subsection{douglas.sql}
+Transforms a layer ({\tt :src}) to {\DP} using $tolerance$ tolerance.
+\inputminted[fontsize=\small]{sql}{douglas.sql}
+
+\subsection{visvalingam.sql}
+Transforms a layer ({\tt :src}) to {\VW} using $tolerance^2$ tolerance.
+\inputminted[fontsize=\small]{sql}{visvalingam.sql}
+
+\subsection{fig2layer.py}
+Creates figures (square, sine wave) as geopackage files.
+\inputminted[fontsize=\small]{python}{fig2layer.py}
+
+\subsection{Makefile}
+This file binds all the pieces together:
+\begin{itemize}
+    \item Prepares the PostGIS database.
+    \item Generates helper figures (sine waves, squares).
+    \item Runs analysis on input files ({\DP} and {\VW}).
+    \item Invokes {\tt latexmk} as a final report generation step.
+\end{itemize}
+\inputminted[fontsize=\small]{make}{Makefile}
+
+\subsection{layer2img.py}
+This file accepts a layer (or two) and generates a PDF image suitable for embedding into the report.
+\inputminted[fontsize=\small]{python}{layer2img.py}
+
+\end{appendices}
 \end{document}