diff --git a/build-pdf.sh b/build-pdf.sh
index ab60860..36d899f 100644
--- a/build-pdf.sh
+++ b/build-pdf.sh
@@ -1 +1,14 @@
-pandoc -V margin-left=0.75in -V margin-right=0.75in -V margin-top=1in -V margin-bottom=1.5in -i foss-primer.md -o foss-primer.pdf ; evince foss-primer.pdf
+
+# This works for me in bash on an Ubuntu 18.04 system with the pandoc package and its dependencies installed.
+# I suspect it also makes use of the big pile of texlive packages I have installed and to which reference is made in the
+# Suggests: line of the pandoc package, cf `apt-cache show pandoc`
+
+pandoc \
+-V documentclass=extarticle \
+-V fontsize=14pt \
+-V margin-left=0.75in \
+-V margin-right=0.75in \
+-V margin-top=1in \
+-V margin-bottom=1.5in \
+-i foss-primer.md -o foss-primer.pdf ; evince foss-primer.pdf
+