diff --git a/.ocamlinit b/.ocamlinit
new file mode 100644
index 0000000..702eca1
--- /dev/null
+++ b/.ocamlinit
@@ -0,0 +1,3 @@
+#load "parser.cmo";;
+#load "periodic.cmo";;
+#load "main.cmo";;
diff --git a/Makefile b/Makefile
index ad616e8..45938f0 100644
--- a/Makefile
+++ b/Makefile
@@ -5,5 +5,9 @@ native:
 
 byte:
 	ocamlfind ocamlc $(common_files)
+
+utop: byte
+	utop $(common_object)
+
 clean:
 	rm -f *.cmo *.cmi *.o *.out *.cmx