This is the weave diagram of the fabric displayed on the left. The annotations provide instructions for the final product:
“Drawings of arum lilies; wrought damask with gold tip printed on ad hoc silk and metal warp; produced in November 1938 for Parisian haute couture”.
The weave diagram translates the textile design into a technical drawing, which is then used for the manufacturing process. Each tile corresponds to a thread or a cluster of threads.