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- HyGlos: Right/Left arrow
- ========================
-
- The Right arrow, which executes highlighted hypertext jumps,
- expands displayed details. The Left arrow, which returns to
- previously selected jumps, collapses details.
-
- To help users systematically explore a body of knowledge, HyGlos
- remembers each of the previous screens along with the associated
- highlighted jump. This automatic "bookmark" <link35 1 13>
- capability is limited to hypertext jumps of 32 levels deep.
-
- A "well constructed" hypertext systems allows users to:
- Key
- Points (1) work without knowledge of the search goal <link32>
- ====== (2) work without knowledge of the subject <link33>
- (3) work without knowledge of the access technology <link34>
-
- The HyGlos command interfaces (mostly Up/Dn/Right/Left keys)
- aid these three requirements. Success with points (1) and (2)
- depend on rapid responses to a selected command. Point (3)
- depends on matching operating keystrokes to user-intuitive actions.
- How?
- ==== Point (4) - the developer must make all jumps predictable. <link53>
-
- ==== <g HYGLOS> 16 links in glossary topic
- ==== <g ARROW> 2 links in glossary topic