Examples of usage:

TextTrimming="WordEllipsis" Text="{Binding Path=[txt.tText], Converter={StaticResource XmlConverter}}"/>

<TextBlock Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" HorizontalAlignment="Stretch" TextWrapping="Wrap" TextTrimming="WordEllipsis" Text="{Binding Path=[txt.tText], Converter={StaticResource XmlConverter}}"/>

HtmlText="{Binding Path=[story.xmlText], Converter={StaticResource XmlConverter}}"/>