could use some help.

I have a question on Savage Stealth rifles. They're marketed as having a "trued
action". I've searched here and elsewhere several different ways and have been
unable to find an answer to this question: what does Savage mean by a "trued
action"

Does anyone KNOW what they actually do, or how they manufacture their "trued
action" vs a typical production action? Do they selectively mill receivers and parts
on newer or updated machinery just for their "trued actions"? Do they contract
the work out to a specialty builder? Do they just take a typical production action
and work it?

Does anyone actually KNOW what they do to make their "trued actons"?

TIA