Five terms beginning with the letter S used to create a workplace suitable for lean production: sort, set in order (or simplify), shine (or scrub), standardize, and sustain. Sort means to separate needed items from unneeded ones and remove the latter. Set in order means to neatly arrange items for use. Shine means to clean up the work area. Standardize means to sort, simplify, and scrub daily. Sustain means to always follow the first four Ss. These practices are sometimes referred to by their Japanese equivalents: seiri, seiton, seiso, seiketsu, and shitsuke.