diff --git a/content/doc/advanced/customizing-gitea.en-us.md b/content/doc/advanced/customizing-gitea.en-us.md
index 98b73f8..365d638 100644
--- a/content/doc/advanced/customizing-gitea.en-us.md
+++ b/content/doc/advanced/customizing-gitea.en-us.md
@@ -17,6 +17,10 @@ menu:
 
 The main way to customize Gitea is by using the `custom` folder. This is the central place to override and configure features.
 
+## Specify the custom folder
+
+The default custom folder is `GITEA_HOME/custom`, and you can set it by the env `GITEA_CUSTOM`.
+
 ## Customizing /robots.txt
 
 To make Gitea serve your own `/robots.txt` (by default, an empty 404 status is served), simply create a file called `robots.txt` in the `custom` folder with the [expected contents](http://www.robotstxt.org/). **Note** that you have to restart Gitea for it to notice the new `robots.txt`.
@@ -28,3 +32,11 @@ To make Gitea serve custom public files (like pages and images), use the folder
 ## Changing the default avatar
 
 Place the png image at the following path: `custom/public/img/avatar_default.png`
+
+## Customizing licenses/readme/locales/labels/gitignores
+
+Put your customerize files into `custom/options/license`/`custom/options/readme/`/`custom/options/locale`/`custom/options/label/`/`custom/options/gitignore`
+
+## Customizing templates
+
+Put your template files on `custom/templates/`
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