civ14/Content.Client/UserInterface/Systems/Objectives/Controls/ObjectiveBriefingControl.xaml

<controls:ObjectiveBriefingControl
    xmlns="https://spacestation14.io"
    xmlns:controls="clr-namespace:Content.Client.UserInterface.Systems.Objectives.Controls"
    Orientation="Horizontal">
    <RichTextLabel Name="Label" Access="Public" SetWidth="325" HorizontalAlignment="Left"/>
</controls:ObjectiveBriefingControl>