SwiftAttributedStrings.swift

struct ContentView: View {
    var body: some View {
        Text(attributedString)
    }
    
    var attributedString: AttributedString {
        var attributes = AttributeContainer()
        
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.lineSpacing = 10.0
        paragraphStyle.lineHeightMultiple = 100.0
        paragraphStyle.paragraphSpacing = 20.0
        attributes.paragraphStyle = paragraphStyle
        
        var attributedString = AttributedString("Once upon a time there was a duck who lived in a pond and the duck's name was Henry", attributes: attributes)
        
        let duckRange = attributedString.range(of: "duck")!
        attributedString[duckRange].foregroundColor = .white
        attributedString[duckRange].backgroundColor = .green
        
        return attributedString
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
            .previewLayout(.fixed(width: 200.0, height: 200.0))
    }
}