diff --git a/whistle/.gitignore b/whistle/.gitignore
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--- /dev/null
+++ b/whistle/.gitignore
@@ -0,0 +1 @@
+/cli*
diff --git a/whistle/README.md b/whistle/README.md
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--- /dev/null
+++ b/whistle/README.md
@@ -0,0 +1,7 @@
+Download and unpack one of the tool packages [from here](https://drive.google.com/drive/folders/1haPX556rR4v13M1Zf525YB62IVC8IxWI) into the `whistle` folder
+
+
+In the `whistle` folder run:
+```
+cli-dev-SNAPSHOT/bin/cli -i input/in.json -m mapping/main-1.wstl
+```
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diff --git a/whistle/input/in.json b/whistle/input/in.json
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index 0000000..e69de29
diff --git a/whistle/mapping/demo/demo-1.wstl b/whistle/mapping/demo/demo-1.wstl
new file mode 100644
index 0000000..a755703
--- /dev/null
+++ b/whistle/mapping/demo/demo-1.wstl
@@ -0,0 +1,5 @@
+package demo
+
+def demo_1() {
+  demo_1: "Demo one"
+}
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diff --git a/whistle/mapping/main-1.wstl b/whistle/mapping/main-1.wstl
new file mode 100644
index 0000000..5f8fae0
--- /dev/null
+++ b/whistle/mapping/main-1.wstl
@@ -0,0 +1,3 @@
+import "./demo/demo-1.wstl"
+
+demo::demo_1()
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