4 magic word, magic processor flag ('MWOBPPC ') - 2x 4 bytes
5 magic flags, version (file format version?) - 2x 4 bytes
10 header for file 1 - 20 bytes
11 - modification time - 4 bytes
12 - offset to filename - 4 bytes
13 - offset to full path - 4 bytes (NOTE: NOT a full path in reality!)
14 - offset to object data - 4 bytes
15 - size of object data - 4 bytes
19 header for file n - 20 bytes
21 file 1 name + NUL - variable
22 file 1 name + NUL - variable
23 file 2 name + NUL - variable
24 file 2 name + NUL - variable
26 file n name + NUL - variable
27 file n name + NUL - variable
29 padding to multiple of 4 bytes - 0 - 3 bytes
31 file 1 data - variable (padded to 4-byte boundary)
32 file 2 data - variable (padded to 4-byte boundary)
34 file n data - variable (padded to 4-byte boundary)