As a programmer, if your usage complies with the restrictions of
BUFFER: (in particular, no adjacent initialized data that you want to
treat as contiguous with the BUFFER: data), use BUFFER: instead of
CREATE ALLOT, for image size reduction on some systems.
As a system implementor, you can put the BUFFER: data in uninitialized
memory.
Just for reference, see also the discussion concerning addresses between different runs from the same saved image. Probably, this issue should be discussed further and reflected in the rationale too.