[MSDN Library April 2000] How Extensions Work (100%)

MSDN Library - April 2000 > Platform SDK > Messaging and Collaboration Services > Extending the Microsoft Exchange Client > Guide > About Client Extensions

[MSDN Library April 2000] How the Samples are Documented (41.5217391304348%)

MSDN Library - April 2000 > Platform SDK > Messaging and Collaboration Services > Microsoft Exchange Server > Microsoft Exchange Server Programmer's Reference > Guide > Sample Applications

[MSDN Library April 2000] How to Create a Notification Server (31.8223443223443%)

MSDN Library - April 2000 > Knowledge Base > Office > Office Server Extensions

[MSDN Library April 2000] How Modeless Coordination Works (31.6021045859756%)

MSDN Library - April 2000 > Platform SDK > Messaging and Collaboration Services > Extending the Microsoft Exchange Client > Guide > Using Client Extensions > Modal and Modeless Extension Windows > Writing Modeless Extensions

[MSDN Library April 2000] How to Create an Office 2000 Discussion Server (31.201226309922%)

MSDN Library - April 2000 > Knowledge Base > Office > Office Server Extensions

[MSDN Library September 1992] How Pop-Up Windows Work (25.7626431539475%)

Unsupported Tools & Utilities > Windows Help Authoring Guide > Chapter 9 Defining Topic Windows > Pop-Up Windows

[MSDN Library September 1992] How This Book is Organized (25.6270903010033%)

Product Documentation > Multimedia Development Kit > Authoring Guide > Chapter 1 Introduction

[MSDN Library September 1992] How Build Tags Work (25.323446576307%)

Unsupported Tools & Utilities > Windows Help Authoring Guide > Chapter 6 Creating Topics > Assigning Build Tags

[MSDN Library September 1992] How Entry Macros Work (24.4647593785525%)

Unsupported Tools & Utilities > Windows Help Authoring Guide > Chapter 6 Creating Topics > Specifying Topic-Entry Macros

[MSDN Library September 1992] How Filters Work (24.1420231179957%)

Books and Magazine Articles > Advanced MS-DOS Programming > PART 1 PROGRAMMING FOR MS-DOS > Chapter 15 Filters