underline

From Feather · feather.underline

In Xcode, drag the template into an asset catalog, where it appears as feather.underline.

SwiftUIUIKitAppKit

Image("feather.underline")
    .font(.title)
    .fontWeight(.semibold)

Label("Underline", image: "feather.underline")

let configuration = UIImage.SymbolConfiguration(
    pointSize: 24, weight: .semibold, scale: .medium)
let image = UIImage(named: "feather.underline", in: nil, with: configuration)

let configuration = NSImage.SymbolConfiguration(
    pointSize: 24, weight: .semibold, scale: .medium)
let image = NSImage(named: "feather.underline")?
    .withSymbolConfiguration(configuration)