Domain Mapping instructions

Just need you to verify these instructions. I cant tell if this is one or two steps?

Edit wp-config.php and uncomment (remove the //) the following: //define( 'SUNRISE', 'on' );

This is how my code looks.
// uncomment this to enable WP_CONTENT_DIR/sunrise.php support
//define( 'SUNRISE', 'on' );

Your instructions can have 2 different meanings and isn't clear, I had 4 other people look at this and they cant figure out what you want to delete. Maybe you need to fix this, but I still need clarification on what needs to be edited.