5.8.5 linux  <                    => unix perlio
5.8.5 linux  <            binmode => unix perlio
5.8.5 linux  <:raw                => unix 
5.8.5 linux  <:raw:perlio         => unix perlio

5.8.6 darwin <                    =>             stdio
5.8.6 darwin <            binmode =>             stdio
5.8.6 darwin <:raw                => unix
5.8.6 darwin <:raw:perlio         => unix perlio

5.8.6 win32  <                    => unix        crlf
5.8.6 win32  <            binmode => unix        crlf
5.8.6 win32  <:raw                => unix 
5.8.6 win32  <:raw:perlio         => unix perlio