Question: I'm using a .wxl file to customize the text in the various dialogs in WixUI\_FeatureTree. How can I insert a newline? 

This doesn't work: 

```
<WixLocalization Culture="en-us" xmlns="http://schemas.microsoft.com/wix/2006/localization">
  <String Id="WelcomeDlgTitle">{\WixUI_Font_Bigger}Welcome to the Setup Wizard for\r\n[ProductName]</String>
</WixLocalization>

```

If I try that, I get "\r\n" in the text in the dialog.

Answer: 
I don't have experience of this particular use but you might be able to use entities, e.g. 
```
First Line&#13;&#10;Second Line
```
This is what worked for me on WIX 3.5:

```
First Line&#xD;&#xA;&#x9;Second Line

```