openmw-tes3coop/extern/mygui_3.0.1/openmw_resources/openmw_messagebox_layout.xml

<?xml version="1.0" encoding="UTF-8"?>

<MyGUI type="Layout">
    <Widget type="Window" skin="MW_Dialog" layer="Windows" position="0 0 491 302" name="_Main">
        <Widget type="StaticText" skin="NormalText" position="4 4 70 18" name="message"/>
    </Widget>
</MyGUI>