diff --git a/README.md b/README.md
index 41bfa97a..7a144cad 100644
--- a/README.md
+++ b/README.md
@@ -5,11 +5,11 @@ to read converted documents in HTML format, get support in our forum:
 # How to translate and contribute
 
 * Create a new directory and name it to the short language code. e.g. for
-  Germany, please name it `de_DE`.
-* Add file `de_DE/_lang.md` with the full name of the language. e.g.
+  Germany, please name it `zh_CN`.
+* Add file `zh_CN/_lang.md` with the full name of the language. e.g.
   write `English` in `en_US/_lang.md`, `简体中文` in `zh_CN/_lang.md`.
 * Copy the markdown document you want to translate to new language directory,
   create the same sub-directories as original document. For example, to
   translate `en_US/howto/reset.user.password.md`, please create
-  `de_DE/howto/` and copy `reset.user.password.md` to `de_DE/howto/`.
+  `zh_CN/howto/` and copy `reset.user.password.md` to `zh_CN/howto/`.
 * Translate the file and send a pull request.
diff --git a/USAGE.md b/USAGE.md
index 9be38e30..275a231a 100644
--- a/USAGE.md
+++ b/USAGE.md
@@ -48,3 +48,9 @@
 ```bash
 $ bash convert.sh
 ```
+
+To recompile all files, append flag `--all`:
+
+```bash
+$ bash convert.sh --all
+```