renewal and reservation at any OPAC terminal. Multimedia Information System (MMIS) Multimedia Information System is an example of all-embracing use of information technology and computer application in the Hong Kong Central Library. A three level audio-on-demand (AOD) and video-on-demand (VOD) system has been set up: 1st level: built upon the high quality video-audio servers. Users can access the system in sync. 2nd level: consists of servers and jukeboxes. It is a more economical channel for the public to search for less frequently used audio/video materials. 3rd level: a conventional video/audio distribution network is used. Users can access media of most formats using LD, VCD, DVD, CD player and cassette player. To enable more public to use the first level video and third level audio and video of the AOD/VOD system, about 90 Asynchronous Transfer Mode (ATM) terminals are installed in the Hong Kong Central Library. Meanwhile, the public can also use the AOD system by using the over 400 LAN workstations in the Central Library. In addition, the Hong Kong Central Library provides document imaging materials, such as drawings, manuscripts, microfilms, clippings, reports, posters, house programmes, newspapers, photos, maps, pictures, black-and-white document images etc. After clearance of the relevant copyright/licensing terms, the materials are digitised and stored in the multimedia databases for all set access of users. Comparing with the traditional library services, the digital library can provide better services in the way that: user can search information once there are networked workstations; multiple users can search for and use the same library materials concurrently; research and accessing information becomes more effective, efficient and in-depth; research means are of a greater variety, such as searching by colour format, style and structure, etc. The Multimedia Information Services have already been extended to other public libraries. Depending on user demand, the Hong Kong Central Library may also make more workstations available for use. Legal Deposit Library The Hong Kong Central Library is an intelligent building, built on a network flooring system to offer litheness for the supply of power, telecommunication and further alteration and extension. Hong Kong Central Library has been designated as the legal depository library in Hong Kong for nine global organisations: Asian Development Bank European Union International Labour Organization International Maritime Organization United Nations United Nations Educational, Scientific and Cultural Organization World Bank World Trade Organization World Food Programme Materials published by these organisations will have copies sent to