diff --git a/Makefile b/Makefile
index f08136c..512c8b6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,35 @@
+# Usage example
+
+##
+## Local configuration
+##
+
+##
+## Configuration of input variables for libraries
+##
+PLANTUML_SRC_DIR = $(SOURCE_DIR)/plantuml
+PLANTUML_DEST_DIR = $(IMAGES_DIR)/plantuml
+
+MOCODO_SRC_DIR = $(SOURCE_DIR)/mocodo
+MOCODO_DEST_DIR = $(IMAGES_DIR)/mocodo
+
+GRAPHVIZ_SRC_DIR = $(SOURCE_DIR)/graphviz
+GRAPHVIZ_DEST_DIR = $(IMAGES_DIR)/graphviz
+
+##
+## Include libraries
+##
+include mocodo.mk
+include dot.mk
+include plantuml.mk
+
+##
+## Rules
+##
+
+.PHONY: build
+build: plantuml-build mocodo-build graphviz-build
+
+.PHONY: clean
+clean: plantuml-clean mocodo-clean graphviz-clean
 
--include mocodo.mk
--include dot.mk
--include plantuml.mk