[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] keyedReference element     (tModel data structure)Ó _ XE ÓtModel data structure         keyedReference elementÓ   keys     management  2nd  3rd          XKMS  2nd  3rd  4th      private/public      values         retrieving      XKMS  keytool command  2nd  KIF     (Knowledge Interchange Format)  Knowledge Interchange Format     (KIF)  Knowledge Query and Manipulation Language     (KQML)  KQML     (Knowledge Query and Manipulation Language)