anchor.diff:  // TODO: Determine the complement color for an image.
   // TODO: The scroll position isn't being remembered after returning from looking
   //       at a specific session.
  -// TODO: Show the day and time on the session page.
   
   class SchedulePage extends StatefulWidget {
     static const String title = 'Schedule';
  
positive.code: 
  import 'package:cloud_firestore/cloud_firestore.dart';
  import 'package:flutter/material.dart';
  
  import 'common.dart';
  
  
negative.code:                     session.presentersDescription,
                      style: descStyle,
                    ),
                    new Text(
                      "${new DateFormat.MMMd().format(session.date)}, ${session.time.format(context)}",
                      style: dateTimeStyle,
                    ),
                    pad8(),
                    new Text(session.descriptionParagraphs, style: descStyle),
                  ],
  