文档介绍：Table of Content
TABLE OF CONTENT ........................................................................................................................................ 2
FOREWORD......................................................................................................................................................... 6
FOREWORD......................................................................................................................................................... 7
PREFACE.............................................................................................................................................................. 8
WHO SHOULD READ THIS BOOK ......................................................................................................................... 8
WHAT YOU WILL LEARN ..................................................................................................................................... 9
WHAT THIS BOOK DOES NOT COVER .................................................................................................................. 9
HOW THIS BOOK ANIZED........................................................................................................................ 10
ACKNOWLEDGEMENTS .......................................................................................................................................11
ABOUT THE COVER PICTURE ..............................................................................................................................11
INTRODUCTION............................................................................................................................................... 12
WHAT IS MESSAGING?....................................................................................................................................... 13
WHAT IS A MESSAGING SYSTEM? ................................................