An information outputting apparatus for outputting a first information, and a second information including a plurality of information units, comprising: storage means operable to store an information classification library including a plurality of information units and a classification status for each of the information unit; classification means operable to determine the classification status of each information unit in the second information according to the information classification library; output means operable to synchronically output the first information and the information units in the second information based on the classification results in said classification means; and classification control means operable to change real time the classification status for at least one information unit in the information classification library while the first information is output.