Five Japanese-language terms used to create a workplace suited for visual control and Lean production. Seri means to separate needed tools, parts and instruction from unneeded materials and to remove the latter. Seiton means to neatly arrange and identify parts and tools for ease of use. Seiso means to conduct a cleanup campaign. Seiketsu means to conduct the first three S’s at frequent intervals to keep a workplace in perfect condition. Shitsuke means to form the habit of following the first four S’s.