Pedal to booster rod/linkage?

On the linkage or rod that goes from the brake pedal through the firewall to the brake booster. Does the linkage point up or down? The linkage/rod has angled end that attaches to the booster. Trying to figure out if the angled end points up or down.


It appears there is a hole for either way on the booster linkage. However the only place there is an opening to install the linkage pin, would be on the lower hole.