PFF stands for "PICT Flick File." It's a custom format HyperBole Studios developed for storing animations, somewhat similar to GIF files. PICTs are Apple-format images (see http://en.wikipedia.org/wiki/PICT). Here's some documentation that describes the format of PFF files.
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|______________________________________________________________________________| & a/ R# d2 D, Z7 M9 M7 C& V
| 32-bit value: Number of PICTs in the structure |
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M0 W' u% {2 ]) @$ h- J2 Y| Array of 32-bit values, size (number of PICTs + 1): The absolute offsets of each PICT from the |
% e) E. h3 p$ v3 p0 E, l; D+ a% @2 s| beginning of the file. The last offset value is used to determine the size of the last PICT in the structure. ! T$ y4 q6 d3 [* t$ F
|______________________________________________________________________________| q8 }! x- C2 Q
| Array of 32-bit values, size (number of PICTs): The duration (in milliseconds) associated with | # b$ N) W* { E# E
| each PICT (for animations) |
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| variable length PICT data | 7 R+ n# Y* E" k- @8 b9 }
|______________________________________________________________________________| |