Proceedings article published in 1997 by P.~H Scherrer, J. Schou, R.~S Bogart, R.~I Bush, J.~T Hoeksema, A.~G Kosovichev, H.~M Antia , S.~M Chitre, J. Christensen-Dalsgaard, R.~M Larsen, F.~P Pijpers, A. Eff-Darwich, S.~G Korzennik, D.~O Gough, T. Sekii and other authors. P.~H Scherrer, J. Schou, R.~S Bogart, R.~I Bush, J.~T Hoeksema, A.~G Kosovichev, H.~M Antia , S.~M Chitre, J. Christensen-Dalsgaard, R.~M Larsen, F.~P Pijpers, A. Eff-Darwich, S.~G Korzennik, D.~O Gough, T. Sekii, R. Howe, T. Tarbell, A.~M Title, M.~J Thompson, J. Toomre

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