diff --git a/readme.md b/readme.md
index 8b75627..356be22 100644
--- a/readme.md
+++ b/readme.md
@@ -1 +1,8 @@
 [![DOI](https://zenodo.org/badge/247666595.svg)](https://zenodo.org/badge/latestdoi/247666595)
+
+# Compile Figure
+
+``` bash
+  cd inkscape;
+  for f in *.svg; do inkscape -D --export-type=pdf "$f"; done
+```