diff --git a/docs/wrap_cli.md b/docs/wrap_cli.md
index 3791f7d..d48ae43 100644
--- a/docs/wrap_cli.md
+++ b/docs/wrap_cli.md
@@ -39,3 +39,80 @@ dash_config:
   # Dash related config
   console_interval: 2000
 ```
+
+You can generate this file to your working path, using:
+
+```bash
+$ python -m oneface.wrap_cli generate ./example.yaml
+```
+
+Then you can lanuch the application with:
+
+```bash
+$ python -m oneface.wrap_cli run example.yaml qt_gui  # or
+$ python -m oneface.wrap_cli run example.yaml dash_app
+```
+
+
+## Command insert
+
+Extra string can insert to the actually executed command when the
+parameter is a `bool` type. It's useful when the command contains some
+"Flag" parameters. For example:
+
+```YAML
+name: add
+
+command: python {verbose} -c "print({a} + {b})" 
+
+arguments:
+
+  verbose:
+    type: bool
+    default: False
+    true_insert: "-v"  # insert "-v" flag when verbose is True
+    false_insert: ""
+
+  a:
+    type: int
+    range: [0, 10]
+
+  b:
+    type: int
+    range: [-10, 10]
+    default: 0
+```
+
+
+## Configurations
+
+You can modify the configuration related to
+the specific interface([Qt](./qt_confs.md) and [Dash](./dash_confs.md)).
+Using the corresponding fields, for example:
+
+```YAML
+qt_config:
+  name: "my qt app"
+  size: [300, 200]
+  run_once: False
+
+dash_config:
+  host: 127.0.0.1
+  port: 8989
+  show_console: True
+  console_interval: 2000
+  init_run: True
+```
+
+And parameter related configrations should set to the corresponding argument fields.
+For example:
+
+```YAML
+arguments:
+
+  a:
+    type: int
+    range: [0, 10]
+    interactive: True  # will let this argument interactive in dash app
+
+```
diff --git a/oneface/wrap_cli/__main__.py b/oneface/wrap_cli/__main__.py
index 2bf2c35..78b6d2e 100644
--- a/oneface/wrap_cli/__main__.py
+++ b/oneface/wrap_cli/__main__.py
@@ -12,7 +12,7 @@
 EXAMPLE_FILE = osp.join(FILE_DIR, "example.yaml")
 
 
-def gen(target_path: str = "./oneface.yaml"):
+def gen(target_path: str = "./example.yaml"):
     print(f"Generate an example config file in: {target_path}")
     with open(EXAMPLE_FILE) as f:
         content = f.read()