Helen, thank you very much,
So if I understand correctly :
I have table T, which has only one blob column B.

Table T has for example 3 rows, and each row contains some blob data
(not null).

On one page can be stored segments from only one blob column "B" from
one table "T" ?

If all 3 blobs data (from 3 rows) from column "B" from table "T" fit
to one page, will they be stored on this one page (if there is free
space) ?

P.S. default segment size 80 is really out-of date :-) I have read
documentation "Data definition guide" from IB6, but there is no
comment, that it is "archaism"

Thanks
-laco.