Interactive computer software; Interactive computers for use in training; Interactive display apparatus (electric); Interactive display instruments (electric); Interactive education software; Interactive graphics screens; Interactive terminals; Interactive video apparatus; Interactive video instruments; Interactive video players; Interactive video software; Computer programs for providing a graphical presentation of data; Apparatus for collecting encoded data for supply to computers; Apparatus for controlling the input of data; Apparatus for controlling the output of data; Apparatus for controlling the processing of data; Apparatus for controlling the storage of data; Apparatus for data collection; Apparatus for data input; Apparatus for data output; Apparatus for data storage; Computer data input devices; Computer installations for the communication of data; Computer installations for the processing of data; Data collection computer installations; Data collection instruments; Data collectors; Apparatus for converting digital values into graphic information; Apparatus for the graphic display of data; Computer graphics apparatus; Computer graphics display stations; Computer programs for producing computer graphics; Computer programs relating to the creation of graphic images; Data processing software for graphic representations; Graphics display terminals; Graphics output apparatus; Instruments for the projection of graphic images; Apparatus for reproducing video; Computer controlled installations of video display apparatus; Visualization apparatus; Apparatus for displaying information