uikit8 - Gahlot/Training-Module GitHub Wiki UIActivityViewController https://developer.apple.com/documentation/uikit/uiactivityviewcontroller NSAttributedString https://developer.apple.com/documentation/foundation/nsattributedstring https://developer.apple.com/documentation/foundation/nsmutableattributedstring https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/AttributedStrings/Concepts/AttrStrings.html