font stuff

            <ResourceDictionary.ThemeDictionaries>
                <ResourceDictionary x:Key="Default">
                    <FontFamily x:Key="ContentControlThemeFontFamily">/Assets/fonts/OldStandard-Regular.ttf#Old Standard TT
                    </FontFamily>

                    <Style TargetType="TextBlock">
                        <Setter Property="FontFamily"
                                Value="/Assets/fonts/OldStandard-Regular.ttf#Old Standard TT" />
                    </Style>
                </ResourceDictionary>
            </ResourceDictionary.ThemeDictionaries>