module Ethumb:sig
..end
typethumb_aspect =
[ `crop | `ignore_aspect | `keep_aspect ]
typethumb_fdo_size =
[ `large | `normal ]
typethumb_format =
[ `eet | `fdo | `jpeg ]
typethumb_orientation =
[ `flip_horizontal
| `flip_transpose
| `flip_transverse
| `flip_vertical
| `orient_none
| `orient_original
| `rotate_180
| `rotate_90_ccw
| `rotate_90_cw ]