diff --git a/sbabook.bod.tex b/sbabook.bod.tex
new file mode 100644
index 0000000..bb5f575
--- /dev/null
+++ b/sbabook.bod.tex
@@ -0,0 +1,7 @@
+% Paper format for https://librairie.bod.fr
+\newcommand{\bodpage}{
+	\setstocksize{220mm}{155mm} % final trimmed book dimensions
+	\setbleed{5mm} % additional paper, before trimming
+	\setlrmarginsandblock{.85in}{.65in}{*}
+	\setulmarginsandblock{.75in}{.75in}{*}}
+\providecommand{\setuppage}{\bodpage}\input{sbabook}
diff --git a/sbabook.spiral.tex b/sbabook.spiral.tex
index 2327175..630cda9 100644
--- a/sbabook.spiral.tex
+++ b/sbabook.spiral.tex
@@ -1 +1,2 @@
+% Paper format for office binding (A4 or letter paper)
 \providecommand{\setuppage}{\spiralboundpage}\input{sbabook}