HOFFPAGE_SIZE
memcpy(&a_hkd, hk, HOFFPAGE_SIZE);
P_ENTRY(hcp->pagep, H_DATAINDEX(hcp->bndx)), HOFFPAGE_SIZE);
k.size = HOFFPAGE_SIZE;
d.size = HOFFPAGE_SIZE;
#define HOFFPAGE_PSIZE (HOFFPAGE_SIZE + sizeof(db_indx_t))