SERVOxx_TRIM on Bootup

Can someone please confirm that the SERVOxx_TRIM parameter is what the PWM of that channel will be set at on boot up?

That should be the case for traditional servos, TRIM would be used to set the center point or at-rest position.

Thanks. I have a Seagull #REC2 which for manual photo has the neutral setting at 1175. So the SERVOxx-TRIM should be set at 1175 so it boots up and stays at that setting until a different pwm is sent to that channel?