text: /**
   * 
   * Manipulating the DOM exercise.
   * Exercise programmatically builds navigation,
   * scrolls to anchors from navigation,
   * and highlights section in viewport upon scrolling.
   * 
   * Dependencies: None
   * 
   * JS Version: ES2015/ES6
   * 
   * JS Standard: ESlint
   * 
  */
  
  /**
   * Comments should be present at the beginning of each procedure and class.
   * Great to have comments before crucial code sections within the procedure.
  */
  
  /**
   * Define Global Variables
   * 
  */
  
  
  /**
   * End Global Variables
   * Start Helper Functions
   * 
  */
  
  
  
  /**
   * End Helper Functions
   * Begin Main Functions
   * 
  */
  
  // build the nav
  
  
  // Add class 'active' to section when near top of viewport
  
  
  // Scroll to anchor ID using scrollTO event
  
  
  /**
   * End Main Functions
   * Begin Events
   * 
  */
  
  // Build menu 
  
  // Scroll to section on link click
  
  // Set sections as active
  
  
  