Postgresql: pg_dump what are [large objects]

Question

I was trying to do a backup using pg_dump. There is an option keep me wondering.

According to pg_dump --help

 -b, --blobs                  include large objects in dump  

I try looking for blobs, but only got info regarding BYTEA

http://www.postgresql.org/docs/9.1/static/datatype-binary.html

so what are large objects ?

Answer 1

http://postgresql.org/docs/current/static/largeobjects.html

Thanks this answer my question.

I just got a negative vote for my question.
In my defense i search for posgres BLOB and only find info about the BYTEA column, but not about the definition of LARGE OBJECT