Storing Port

[Georgie]

Just to stir things up a bit more, here's another quote from "Into Wine."
"Table wine is stored horizontally so that the wine stays in contact with the cork. This keeps the cork moist thereby preventing air from entering the wine. Fortified wines other than port, are stored standing. If bottles are stored with the labels up, it will be easier to see the deposit of sediment that forms on the opposite side of the bottle when it comes time to open it."

Perhaps GAD's wine guy was thinking of "fortified wines other than port." By the way, what ARE fortified wines other than port? Sherries?