If you want to set specific options from the command line, we also provide flattened shortcuts to any item that is nested in the plist file.
For example, this policy:
-```
+```json
{
"policies": {
"Homepage": {
}
```
which would be set in the plist file like this:
-```
+```plist
<key>Homepage</key>
<dict>
<key>URL</key>
<string>http://example.com</string>
</dict>
```
-As correctly writing nested values with the `defaults` command can be hard, Firefox also supports writing nested values by separating them with `__`, like this:
+Correctly writing the nested value with the `defaults` command can be hard, so you can flatten the keys by separating them with `__`, like this:
```bash
sudo defaults write /Library/Preferences/org.mozilla.firefox Homepage__URL -string "http://example.com"
```