v3vee\0\0\0        : 8 bytes
<length of xml>    : 4 bytes
<xml>
<zeroes>           : 8 bytes of zeroes

<num files>        : 8 bytes

<index>            : 4 bytes
<size>             : 4 bytes
<offset>           : 8 bytes
...
<padding>          : zeroes to 8 byte boundary