Once the @users variable is defined, the controller calls the view (Step 6), shown in Listing 2.6.Variables that startwith the @ sign, called instance variables, are automatically available in the view; in this case, the index.html.erb view in Listing 2.6 iterates through the @users list and outputs a line of HTML for each one. (Remember, you aren’t supposed to understand this code right now. It is shown only for purposes of illustration.)

The view converts its contents to HTML (Step 7), which is then returned by the  controller to the browser for display (Step 8).