diff --git a/examples/draw_map_lines.js b/examples/draw_map_lines.js
new file mode 100644
index 0000000..6ab551e
--- /dev/null
+++ b/examples/draw_map_lines.js
@@ -0,0 +1,15 @@
+function draw_lines()
+{
+	parent.GEO.x_lines.forEach(function(line){
+		draw_line(line[0],line[1],line[0],line[2],2);
+	});
+	parent.GEO.y_lines.forEach(function(line){
+		draw_line(line[1],line[0],line[2],line[0],2);
+	});
+}
+game.on("new_map",function(data){
+	if(!data.redraw) return;
+	draw_lines();
+})
+
+draw_lines();