COMPUTER PROGRAMS; COMPUTER PROGRAMS FOR CREATING AND EDITING VISUAL AND/OR AUDIO-VISUAL PROGRAMME MATERIAL FOR TELEVISION APPLICATIONS, INCLUDING INTERACTIVE TELEVISION APPLICATIONS; COMPUTER PROGRAMS FOR VISUAL AND/OR AUDIO- VISUAL AUTHORING SYSTEMS FOR TELEVISION APPLICATIONS, INCLUDING INTERACTIVE TELEVISION APPLICATIONS; DATA STORAGE MEDIA PRE-RECORDED WITH COMPUTER PROGRAMS-- COMPUTER HARDWARE AND SOFTWARE SYSTEMS FOR USE IN CREATING AND EDITING VISUAL AND/OR AUDIO-VISUAL PROGRAMME MATE...