Editing Pixar Image Computer (section)

=== Header (512 bytes) ===
{| class="wikitable"
|-
! Offset (hex)
! Length
! Field name
! Description
|-
| 0 (0x0000)
| 4 bytes
| file signature/magic number
| {{tt|0x80 0xe8 0x00 0x00}}
|-
| 4 (0x0004)
| 2 bytes
| Version
| File format version (only have version 0)
|-
| 6 (0x0006)
| 246 bytes
| Ascii description
| String for file description
|-
| 252 (0x00fc)
| 4
| Label Pointer
| For continue label if need label longer than 246 bytes. Pointer address from start of file.
|-
| 256 (0x0100)
| 160 bytes
| colspan=2 | Unused
|-
| 416 (0x01a0)
| 2 bytes
| Picture height
| Pixel height of whole picture
|-
| 418 (0x01a2)
| 2 bytes
| Picture width
| Pixel width of full picture
|-
| 420 (0x01a4)
| 2 bytes
| Tile height
| Pixel height of each tile (≤ full picture height)
|-
| 422 (0x01a6)
| 2 bytes
| Tile width
| Pixel width of each tile (≤ full picture width)
|-
| 424 (0x01a8)
| 2 bytes
| Picture format
| 4 bits for tell which channel is in file: <code>R</code> = bit 0, <code>G</code> = bit 1, <code>B</code> = bit 2, <code>A</code> = bit 3; 4 low bits in low byte. 
|-
| 426 (0x01aa)
| 2 bytes
| Picture storage
| Picture encoding and number bits. Have 4 values: <code>0</code> = 8 bit encoded, <code>1</code> = 12 bit encoded, <code>2</code> = 8 bit dumped, <code>3</code> = 12 bit dumped
|-
| 428 (0x01ac)
| 2 bytes
| Blocking factor
| Optimum disk transfer chunk
|-
| 430 (0x01ae)
| 2 bytes
| Alpha mode
| Have 2 value: <code>0</code> = matted-to-black (pre multiply); <code>1</code> = unassociated
|-
| 432 (0x01b0)
| 2 bytes
| x offset
| x offset for picture
|-
| 434 (0x01b2)
| 2 bytes
| y offset
| y offset for picture
|-
| 436 (0x01b4)
| 76 bytes
| colspan=2 |Unused
|}