Creating an underbase in Coreldraw using a choke

here's how to create a quick underbase in Coreldraw.
You can easily create an underbase with out separation software.
In this video I show you how to do it.

[@EnSabac]

Awesome, thanks for the vid and getting right to the meat of the solution.

[@jcybok]

Does this shrink the outline of all pieces of the underbase so that there's no peak in the white?