1 2 5 11 15 20
2 copyright copyright 17 18
3 18 19 2 10
4
5 50 50 WIPO 17 15
6 1995 CD PC PP
7 CD 59 CD CD
8
9
10
11
12 20
13
14 WWWWorld Wide Web
15 WWW Netscape Navigator Internet Explorer Web
16
17
18 CD DVD 50 50 50 50
19
20 2002 2002 2002 2003 2002p.126133