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Message-ID: <2d1ebb110902122042h7cac2095i700473020c627adb@mail.gmail.com> Date: 2009-02-13T04:42:01Z From: Edna Bell Subject: adding S3 vs. S4 to a new package Dear R Gurus: I'm building a package and am wondering whether to use S3 or S4 methods. Any advice, please? Thanks, Edna Bell