Example of markup for Xcode "Quick Help"

QuickHelpMarkupExample.swift

//: Playground - noun: a place where people can play

import Foundation

/**
 This func does the fnord.
 - parameters:
   - foo: The foo.
   - bar: The bar.
 - returns: A return value.
 */
func fnord(foo: String, bar: String) -> Bool {
    return true
}