The Parameter Packet is a location in application storage that contains the following Pointer Definition record. The Pointer Definition record has the following format:

┌───────────────────────────────────────────┐
│Field               Length     C Datatype  │
├───────────────────────────────────────────┤
│Buffer Length       WORD       USHORT      │
├───────────────────────────────────────────┤
│Columns             WORD       USHORT      │
├───────────────────────────────────────────┤
│Rows                WORD       USHORT      │
├───────────────────────────────────────────┤
│Column Hot Spot     WORD       USHORT      │
├───────────────────────────────────────────┤
│Row Hot Spot        WORD       USHORT      │
└───────────────────────────────────────────┘