Field Name	Length (bits)		Bit		Contents	Description
	Item	Total	Algn	Off
load2dBlock	112 + 80*n		16	0	command Packet	Load 2-D Window List Parameter Block (see table 12, swreq Rev. I)
header	48	48	16	0	command Header	Command Packet Header
commandLength	16	16	16	0	uint16 = 7+5*n	Number of 16-bit words in the command packet
commandIdentifier	16	16	16	16	uint16	Used by ground to identify the command
commandOpcode	16	16	16	32	uint16 = 11	Command Operation code which determines format and action of the command [see enum CmdOpcode]: CMDOP_LOAD_2D
windowSlotIndex	16	16	16	48	uint16	Selects which 2D Window List Parameter Block Slot to overwrite with the contained block
checksum	16	16	16	64	uint16	This is the 16-bit XOR checksum value for the following parameter block
windowBlockId	32	32	16	80	uint32	Identifies the 2D Window List Parameter Block
windows[(pl-7)/5]	80	80*n	16	112	window2d	Array of 2-D Window entries
ccdId	4	4	1	112+ 80*i	uint4	Selects to which CCD the window processes [see enum CcdId]
ccdRow	10	10	1	116+ 80*i	uint10	Selects the lowest CCD row index covered by the window
ccdColumn	10	10	1	126+ 80*i	uint10	Selects the lowest CCD column index covered by the window
width	10	10	1	136+ 80*i	uint10	Selects the number of CCD Columns covered by the window (the number of columns minus 1)
height	10	10	1	146+ 80*i	uint10	Selects the number of CCD Rows covered by the window (the number of rows minus 1)
sampleCycle	8	8	1	156+ 80*i	uint8	Selects how many events to skip between each accepted event
lowerEventAmplitude	12	12	1	164+ 80*i	uint12	Selects the minimum event amplitude accepted by the window
eventAmplitudeRange	16	16	1	176+ 80*i	uint16	Range of event amplitudes accepted by the window filter.

Definition of variables

i	the index of an element in the windows array (0 < i < n)
n	the dimension of the windows array [(pl-7)/5]
pl	the value of the commandLength field