Many tailors and dressmakers work in garment factories, where garments are mass produced. Mass production begins with a designed, sample product that is converted into a pattern - usually by a computerised CAD/CAM pattern making system. Once the pattern codes are entered, the markers or pieces of paper drawn to scale and size are 'spat' out from the other end. A factory like this can have as many as 26,000 patterns encoded on the computer. Next, the fabric is laid out on tables with the markers and cut manually, or in some firms, by automated cutting machines. Even the placement of the markers is worked out using computer programs to make sure that there is no wastage of material. The material is then sorted into bundles, ready to be sewn by different machinists and dressmakers, who focus on either zips, collars, polo logos or washing instruction tags. All the pieces are then assembled and the final sewing, such as the overlocking, buttonholing and embroidery is completed.