TYPE: COP
TITLE: Trim COP

This operation trims an input sequence in time by adjusting the beginning or
the end of the sequence. If the start time is moved beyond the beginning of the
sequence, the pre-extend option of the sequence is used to determine the image
(similarly with the end, using post-extend).

This operation is best viewed in the timeline.

Parameters
    Trim     - Specify whether the trim should be:
        Relative to Current Start/End  - Trim values represent start/end offsets.
        Absolute Start/End Values      - Trim values are start/end frames.
        Single Image                   - Trim a single image out of the 
                                         sequence by specifying the frame.
        Single Image Relative to Start - Trim a single image out of the
                                         sequence by an offset from the start.
        Single Image Relative to End   - Trim a single image out of the
                                         sequence by an offset from the end.
    Units     - Specify Frames or Seconds.
    Start     - The start frame or offset to begin the trim at.
    End       - The start frame or offset to end the trim at.

Local Variables:
    L   - Sequence length
    S   - Start of sequence
    E   - End of sequence
    IL  - Input sequence length
    SR  - Sequence frame rate  
    NP  - Number of planes in sequence
    W,H - Width and height of image

See Also: Extend, Shift, Shuffle, Sequence, Snip
