Web based service for collaborative authoring learning using grid portal by Awang Hamid, Dayang Tiawa, Alias, Norma, Omar, Abdul Hafidz, Islam, Md. Rajibul, Saipan @ Saipol, Hafizah Farhah, Muhd. Palil, Siti Qatrunada, Che Abdul Ghani, Asnida, Ramli, Nurelya