diff --git a/files/.gitignore b/files/.gitignore
new file mode 100644
index 0000000..509fc54
--- /dev/null
+++ b/files/.gitignore
@@ -0,0 +1 @@
+stylus-windows.json
diff --git a/files/Makefile b/files/Makefile
new file mode 100644
index 0000000..31397b4
--- /dev/null
+++ b/files/Makefile
@@ -0,0 +1,5 @@
+generate-stylus-for-windows:
+	cat stylus.json | perl -ne "s/Extended/Expanded/g; print;" | tee stylus-windows.json
+
+generate-stylus-from-windows:
+	cat stylus-windows.json | perl -ne "s/Expanded/Extended/g; print;" | tee stylus.json