You need another cup of coffee or less wine, last night.

WARP: the yarns which run vertically or lengthwise in woven goods.

WELT; a strip of material seamed to a pocket opening as a finishing as well as a strengthening device.

Both have to do with a finished material, ply refers to the yarn. That is why I would like to know what their definition of ply is.

Have a Banner Day!

Tom Martin