**
** P4 may be a string that is P2 characters long, or it may be NULL. The nth 
** character of the string indicates the column affinity that should be used
** for the nth field of the index key. The mapping from character to affinity
** is given by the SQLITE4_AFF_ macros defined in sqliteInt.h. If P4 is NULL
** then all index fields have the affinity NONE.
**
** This opcode expands any zero-blobs within the input array. Then if





** P4 is not NULL it applies the affinities that it specifies to the input
** array elements. Finally, if P3 is not 0, it encodes the input array
** into a data record and stores the result in register P3. The OP_Column 
** opcode can be used to decode the record.
**
** Specifying P3==0 is only useful if the previous opcode is an OP_MakeKey.
*/
case OP_MakeKey:
case OP_MakeRecord: {

**
** P4 may be a string that is P2 characters long, or it may be NULL. The nth 
** character of the string indicates the column affinity that should be used
** for the nth field of the index key. The mapping from character to affinity
** is given by the SQLITE4_AFF_ macros defined in sqliteInt.h. If P4 is NULL
** then all index fields have the affinity NONE.
**
** If this instruction is immediately preceded by OP_Permutation, then the
** specified permutation is used to determine the order that registers are
** used to build the record.  The i-th column of the record is taken from
** register P1+aPermute[i].  If OP_Permutation has not been run, then the i-th
** column comes from register P1+i.
**
** This opcode applies the affinities that it specifies to the input
** array elements. Then, if P3 is not 0, it encodes the input array
** into a data record and stores the result in register P3. The OP_Column 
** opcode can be used to decode the record.
**
** Specifying P3==0 is only useful if the previous opcode is an OP_MakeKey.
*/
case OP_MakeKey:
case OP_MakeRecord: {