This panel is used to copy/merge sequences.  There are 2 basic
types of copy operations.
          - Copy to a brand new sequence
          - Copy to an Existing Sequence

Specify the name of the 'source' sequence and the name of the 'target'
sequence.

If the target sequence already exists, then you will be prompted as
to whether you want :

          -    To OVERLAY the target with the source
          -    To APPEND the source to the end of the target
          -    To MERGE the source and target together with the
               result placed in the target sequence.
          -    To ABORT the copy/merge process (via the escape key)

MERGING of sequences is based on the start time of events in
the two sequences participating in the merge.
