Save as WWF, Save a Tree : HomeThe WWF format is a PDF that cannot be printed out. It’s a simple way to avoid unnecessary printing. So here’s your chance to save trees and help the environment. Decide for yourself which documents don't need printing out – then simply save them as WWF.The WWF format is a PDF that cannot be printed out. It’s a simple way to avoid unnecessary printing. So here’s your chance to save trees and help
紙を節約するために開発された独自のPDFフォーマット「WWF」のWindows版がついにリリース | ライフハッカー・ジャパン
