PGADuplicate(3) on Linux
The text 8b52e45b00cd, as Debian 3.1 (Sarge), Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm), Debian 1.3 (Bo), Debian 1.2 (Rex) shipped it. The page shows this text now.
determines if a specified string is a duplicate of one already in an existing population