As an author of online information, you need to know what type of information users need - tutorial, reference, or help. For example, they might need a tutorial to learn a software program, reference information for additional topics, or help information for assistance with the program.

As a programmer implementing or customizing online information, you need to know how the IPF programming interface supports your intended design.

IPF features include:

• A tagging language that formats text, provides ways to connect information units, and customizes windows
  
• A compiler that creates online documents and help windows
  
• A viewing program that displays formatted online documents
  
• A help manager programming interface that allows you to control and customize the display of online information.