diff --git a/doc/main.md b/doc/main.md
index e89a5b6..e68c52c 100644
--- a/doc/main.md
+++ b/doc/main.md
@@ -1,3 +1,9 @@
+# Cli
+
+`on file.onla` to run file.onla
+`on file.onla --compress -o compressed.conla` to compress file.onla to messagePack format
+`on file.onla --convert json -o file.json` to compress file.onla to json (supported formats: json, json5, yaml)
+
 # How to
 
 `All posibilities in example.json5`
diff --git a/examples/hello_world.conla b/examples/hello_world.conla
new file mode 100644
index 0000000..e8ece05
--- /dev/null
+++ b/examples/hello_world.conla
@@ -0,0 +1 @@
+‘¬Hello world!
\ No newline at end of file