- It is a kind of shorthand expression of the waving of warp and weft yarn.
- It gives the information of successive floats.
- The warp floats coming up are put above the fraction line and the weft floats are put under the fraction line.
- It indicates the number of warp and weft yarns in the repeat.
- The repeat number for the warp equals the sum of the figures in the formula number. And for the weft vice versa.
- For example 1/1 plain weave repeat: 2×2