Characteristics of Hypertext Systems:

According to most hypertext developers, there are 4 basic types
of hypertext systems: problem resolution, on-line browsing,
library or literary exchange, and multipurpose.  Whatever the
particular application, a typical hypertext system consists of
text editor, graphics editor, database, and browsing tool for 3-D
viewing.  Many systems use the "Standard General Markup Language"
(SGML) that lets hypertext systems create links across various
applications.  Most text editors can read links created with SGML
(Frisse, 1988). 

<cfile25>   Hypertext Introduction
<cfile29>   Evolution of Hypertext
<cfile31>   Hypertext Construction