[Guy Harris <gharris@xxxxxxxxxxxx>]

> Also, you can chain the testy buffers so that a new child buffer sees only
> part of its parent buffer. This new buffer is passed to the child
> dissector. In this way, you can also get rid of the 'offset' arg of
> each dissector, since each dissector starts dissecting from byte 0
> of the tbuff (Testy Buffer) that it receives.

We could also conceivably use this to handle higher-level packets that
consist of more than one frame, if a testy buffer could refer to
multiple chunks of data.