diff --git a/ATL_BACK.PAS b/ATL_BACK.PAS
new file mode 100644
index 0000000..7710892
--- /dev/null
+++ b/ATL_BACK.PAS
@@ -0,0 +1,11 @@
+unit ATL_Back;
+interface
+
+procedure Back_pic;
+
+implementation
+
+{$L BACK.OBJ}
+procedure Back_pic; external;
+
+end.
\ No newline at end of file