Double layer forming fabrics, woven to an overall repeating weave pattern requiring at least 8 sheds in the loom, provide a low drainage area in a notional center plane between the paper and machine side layers, to resist and retard initial impingement drainage. An analog voltage signal-of-interest is selectively passed through the multiplexor to the buffer. When the knowledge base does not contain an optimal configuration for the new software, an optimal solution for the new software system may be determined by adding a further decision tree branch to the initial decision tree. The patterned layer has a plastic film and a pattern printed in a bottom surface of the plastic film.