[MSDN Library September 1992] Hypertext Jumps (21.0906676042033%)

Unsupported Tools & Utilities > Windows Help Authoring Guide > Chapter 2 Getting Started with Help Authoring > Windows Help Files

[MSDN Library September 1992] Hypertext (18.4988222724072%)

Unsupported Tools & Utilities > Windows Help Authoring Guide > Chapter 3 Designing Your Help System > Design Issues