anchor.diff:  on "https://duckduckgo.com/?q"
   
   (**
  -selected 
  +selected
   --------
  -Assert that a radio or checkbox is selected. 
  +Assert that a radio or checkbox is selected.
   *)
   selected "#yes"
   
   (**
  -deselected 
  +deselected
   ----------
  -Assert that a radio or checkbox is not selected. 
  +Assert that a radio or checkbox is not selected.
   *)
   deselected "#yes"
   
   (**
  -== (equals) 
  +== (equals)
   -----------
  -Assert that the element on the left is equal to the value on the right. 
  +Assert that the element on the left is equal to the value on the right.
   *)
   "#firstName" == "Alex"
   
   (**
  -!= (does not equal) 
  +!= (does not equal)
   -------------------
  -Assert that the element on the left is not equal to the value on the right. 
  +Assert that the element on the left is not equal to the value on the right.
   *)
   "#firstName" != "Tom"
   
   (**
  -*= (one of many equals) 
  +*= (one of many equals)
   -----------------------
  -Assert that at least one element in a list equals a value. 
  +Assert that at least one element in a list equals a value.
   *)
   ".todoItem" *= "Buy milk"
   
   (**
  -*!= (none equals) 
  +*!= (none equals)
   -----------------
  -Assert that none of the items in a list equals a value. 
  +Assert that none of the items in a list equals a value.
   *)
   ".todoItem" *!= "Sell everything"
   
   (**
   contains
   --------
  -Assert that one string contains another. 
  +Assert that one string contains another.
   *)
   contains "Log" (read "#logout")
   
   (**
  -count 
  +count
   -----
  -Assert there are `X` items of given css selector. 
  +Assert there are `X` items of given css selector.
   *)
   count ".todoItem" 5
   
   (**
  -=~ (regex match) 
  +=~ (regex match)
   ----------------
  -Assert that an element `regex` matches a value. 
  +Assert that an element `regex` matches a value.
   *)
   "#lastName" << "Gray"
   "#lastName" =~ "Gr[ae]y"
  
positive.code: (*** hide ***)
  // This block of code is omitted in the generated HTML documentation. Use 
  // it to define helpers that you do not want to show in the documentation.
  #I "../../bin"
  #r "canopy.dll"
  
negative.code: "#lastName" =~ "Gr[ae]y"
  
  (**
  *~ (one of many regex match)
  ----------------------------
  Assert that one of many element `regex` matches a value.
  *)
  "#colors li" *~ "gr[ea]y"
  
  (**
  displayed
  ---------
  Assert that an element is displayed on the screen.
  *)
  displayed "#modal"
  
  (**
  notDisplayed
  ------------
  Assert that an element is not displayed on the screen.
  *)
  notDisplayed "#modal"
  