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 │ └───────────────────────────────────────────┘