10. A method for displaying semantic information in the form of graphic objects in a display window, comprising: a) storing an information structure having: (1) a plurality of levels of semantic containment, each level of semantic containment having: (a) a plurality of semantic entities, each semantic entity having: i) a navigable link to a plurality of other semantic entities; ii) a graphic object for representing the semantic entity on a display screen; such that each semantic entity either semantically contains at least one other semantic entity, is or semantically contained by at least one other semantic entity; b) displaying in the display window graphic objects of at least one semantic entity from an Nth level from the information structure, the display window having a variably resizable display area and a selected information density; c) for each semantic entity from the Nth level that is displayed, displaying in the window the graphic objects of the semantic entities at the (N+1) level that are semantically contained by the semantic entity from the Nth level; d) displaying a cursor in the display window; e) receiving a user input to move the cursor toward at least one of the displayed graphic objects for a semantic entity from the (N+1)th level; f) simulating movement toward a displayed graphic object of a semantic entity from the (N+1)th level by: (1) increasing the size of the displayed graphic objects of the semantic entities from the (N+1)th level; and (2) displaying graphic objects of semantic entities at a (N+2)th level contained by the semantic entities from the (N+1)th level; wherein size of the displayed graphic objects is determined in accordance with the selected information density of the display window.
10. A method for displaying semantic information in the form of graphic objects in a display window, comprising: a) storing an information structure having: (1) a plurality of levels of semantic containment, each level of semantic containment having: (a) a plurality of semantic entities, each semantic entity having: i) a navigable link to a plurality of other semantic entities; ii) a graphic object for representing the semantic entity on a display screen; such that each semantic entity either semantically contains at least one other semantic entity, is or semantically contained by at least one other semantic entity; b) displaying in the display window graphic objects of at least one semantic entity from an Nth level from the information structure, the display window having a variably resizable display area and a selected information density; c) for each semantic entity from the Nth level that is displayed, displaying in the window the graphic objects of the semantic entities at the (N+1) level that are semantically contained by the semantic entity from the Nth level; d) displaying a cursor in the display window; e) receiving a user input to move the cursor toward at least one of the displayed graphic objects for a semantic entity from the (N+1)th level; f) simulating movement toward a displayed graphic object of a semantic entity from the (N+1)th level by: (1) increasing the size of the displayed graphic objects of the semantic entities from the (N+1)th level; and (2) displaying graphic objects of semantic entities at a (N+2)th level contained by the semantic entities from the (N+1)th level; wherein size of the displayed graphic objects is determined in accordance with the selected information density of the display window. 11. The method of claim 10 wherein the information density is a constant and the size of each graphic object is a function of at least the information density.