  I summarize recent analytical and numerical studies of the common envelope
(CE) process and suggest to replace the commonly used alpha-prescription for
the CE ejection by a prescription based on final migration and jets launched by
the companion or the core of the giant stellar primary. In the migration
process the core-companion binary systems is surrounded by a highly oblate
(flatten) envelope, a thick circumbinary disk, formed by the large angular
momentum transferred from the core-companion system to the envelope. I then
show that the energy that can be released by an accreting main sequence
companion can surpass the mutual gravitational energy of the core and the
companion. An efficient channel to leash the accretion energy to expel the CE
is through jets operating via a feedback mechanism (JFM).
