Abstract
This paper proposes using ALPS to specify a new hypertext trail to an existing hypertext document. In Vannevar Bush’s first Hypertext system memex, Bush envisioned memex as having the ability for a user to define a trail in an information space. A trail is a predefined sub-net of an information space. A trail can be used at a later date, be passed on to another user, or be added to existing trails. If trails are to be realized, there needs to be a system independent method of describing them. Trails have two basic primitives, information nodes and links between nodes. Current Hypertext systems provide proprietary linear trail definitions, but a more general definition is needed which includes such features as: sequencing, parallelism, branching, and synchronization.
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