Re: [DaveO] Open Corners
I think I know what you're talking about.
The bottom corners on older containers used to be sewn all the way up to the edge of the flap, forming an enclosed, "boxed-in" corner.
Most manufacturers started designing the side flap to wrap around the bottom flap, closing the corner. The thinking is that the open corner would allow the canopy to be extracted without a boxed-in corner possibly inducing a spin to the packjob as it leaves the pack tray. (It also helped with bridle routing for stowed jumps.)
With wingsuit flights becoming more common, a greater need was identified for a corner that would all but disappear during deployment since wingsuits were generating higher forward speeds at deployment.
Morpheous Technologies answered the call with their, "Dynamic corners". The corners allow the pack tray to completely open, leaving nothing to restrict the deploying canopy.
edit: can't type today!