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for 단일 재 작성 규칙을 추가하는 방법 for-URL을 다시 작성하는 방법 : www.foo.com/tags/tag1+tag2 -> www.foo.com/Pages/Articles/ArticleListing.aspx?tags=tag1+tag2
www.foo.com/tags/tag1 --> www.foo.com/Pages/Articles/ArticleListing.aspx?tags=tag1
www.foo.com/tags/tag1+tag2 --> www.foo.com/Pages/Articles/ArticleListing.aspx?tags=tag1+tag2
www.foo.com/tags/tag1+tag2+tag3 --> www.foo.com/Pages/Articles/ArticleListing.aspx?tags=tag1+tag2+tag3