Debian GNU/Linux 7.1.0 "Wheezy" - Official i386 DVD Binary-3
which means that this disc is number 1 of a set of 10 discs It contains programs ("binaries" for `i386' computers. The programs on the Binary discs are ordered by popularity. The Binary-1 disc contains the most popular programs and the installation tools; it is possible to install and run Debian with only the Binary-1 disc. The other discs, up to Binary-10, contain mostly special-interest programs.
The Release Notes for "wheezy" are available on the Debian web site.