Global guidance:
Users have some "global" information goal and browsing is the way to find the required information.
Local guidance:
To help the user to make one navigation step by suggesting(according to the preferences, knowledge, and background of the user) the most relevant links to follow from the current node.
Local orientation support:
To help the user in local orientation (i.e., to help them in understanding what is around and what is his/her relative position in the hyperspace).
By providing additional information(i.e. annotation) about the nodes available from the current node and limiting(hiding) the number of navigation opportunities to decrease the cognitive overload.
Global orientation support:
To help the user to understand the structure of the overall hyperspace and his or her absolute position in it.
Adaptation of local and global maps
Managing personalized views:
To organize an electronic workplace for the users who need a access to a reasonably small part of a hyperspace.
Each view is just a list of links to all hyperdocuments which are relevant to a particular working goal.