diff --git a/README.md b/README.md
index a4339b0..77cc041 100644
--- a/README.md
+++ b/README.md
@@ -7,11 +7,15 @@
 
 DESHIMA raw data and downloader package
 
-# Usage
+## Use of the data
+
+Please contact [@astropenguin](https://github.com/astropenguin) before using the data.
+
+## Download the data
 
 ```
 $ pip install deshima-rawdata
-$ deshima-rawdata download <obsid>
+$ deshima-rawdata download <observation ID>
 ```
 
 See the command help for more information.
@@ -20,9 +24,9 @@ See the command help for more information.
 $ deshima-rawdata download --help
 ```
 
-# List of raw data
+## List of the data
 
-| Observation ID | File name | Source | Observation type |
+| Observation ID | File name | Source name | Observation type |
 | --- | --- | --- | --- |
 | 20231108052231 | 20231108052231.tar.gz | Jupiter | raster |
 | 20231109015146 | 20231109015146.tar.gz | Jupiter | zscan |
diff --git a/deshima_rawdata/__init__.py b/deshima_rawdata/__init__.py
index e0e1e83..0a9373a 100644
--- a/deshima_rawdata/__init__.py
+++ b/deshima_rawdata/__init__.py
@@ -1,6 +1,10 @@
-__all__ = ["cli"]
+__all__ = ["cli", "download"]
 __version__ = "2023.11.0"
 
 
 # submodules
 from . import cli
+
+
+# aliases
+from .cli import *