7. A system comprising: a computer processor; storage accessible to the computer processor for storing orientation values for each of multiple blocks of text about a topic; and an interface for providing orientation information about the topic, the interface including: a color strip having colors each reflecting a respective orientation for a corresponding block of text about the topic; and a movable visual indicator for selecting one of the colors to cause display of at least a portion of the corresponding block of text.
7. A system comprising: a computer processor; storage accessible to the computer processor for storing orientation values for each of multiple blocks of text about a topic; and an interface for providing orientation information about the topic, the interface including: a color strip having colors each reflecting a respective orientation for a corresponding block of text about the topic; and a movable visual indicator for selecting one of the colors to cause display of at least a portion of the corresponding block of text. 10. The system according to claim 7 , wherein the color strip includes at least a first array of discrete segments.