diff --git a/roles/home-cli/files/markdown.sh b/roles/home-cli/files/markdown.sh
index cb93d6c..b8d4c75 100644
--- a/roles/home-cli/files/markdown.sh
+++ b/roles/home-cli/files/markdown.sh
@@ -2,16 +2,19 @@
set -e
command -v cmark >/dev/null || (echo "cmark: command not found" >&2 && exit 1)
test -n "$2" || (echo "Usage: $(basename "$0") \"Document title\" filename1 [filename2...]" >&2 && exit 1)
+
+# A 160 mm width means a 25 mm margin on each side of a 210 mm A4 sheet of paper.
cat << __EOF__
$1
-
+
__EOF__
+
while shift
do
test -n "$1" || break # No more files.
@@ -19,6 +22,7 @@ do
cmark --to html --nobreaks --unsafe --smart --validate-utf8 $1
echo ''
done
+
cat << __EOF__