acknowledge_hash_table_drul_[LEFT] = scm_c_make_hash_table (61);
acknowledge_hash_table_drul_[RIGHT] = scm_c_make_hash_table (61);
}
acknowledge_hash_table_drul_[LEFT] = scm_c_make_hash_table (61);
acknowledge_hash_table_drul_[RIGHT] = scm_c_make_hash_table (61);
}