surface. Some models specially designed for the elderly may include armrests and devices that help the user to stand back up after use. A soft close feature slows the toilet lid down while closing so the lid does not slam onto the seat, or in some models, the toilet lid will close automatically a certain time after flushing. The most recent introduction is an ozone deodorant system that can quickly eliminate smells. Also, the latest models store the times of day when the toilet is used and have a power-saving mode that warms the toilet seat only during times when the toilet is likely to be used based on historic usage patterns. Some toilets also glow in the dark or may even have air conditioning below the rim for hot summer days. Another recent innovation is intelligent sensors that detect someone standing in front of the toilet and initiate an automatic raising of the lid (if the person is facing away from the toilet) or the lid and seat together (if someone is facing the toilet). Self-cleaning Japanese toilets with washlets increasingly have features intended to reduce the frequency with which manual cleaning is required. Many models will spray a film of water prior to use to prevent waste from bonding to the bowl prior to flushing. Still others will spray a small amount of mild detergent, this has the added benefit of breaking the surface tension of the water, preventing urine or solid waste from splashing during use. Some models will spray electrolyzed water after use to disinfect the bowl. Air ionizers are sometimes included with claims of microbe reduction when the lid is closed. Recently, there has been development in using photocatalytic glazes and ultraviolet light to clean the bowl. Controls Text explaining the controls of these toilets tends to be in Japanese only. Although many of the buttons often have pictograms, the flush button is often written only in Kanji, meaning that non-Japanese users may initially find it difficult to locate the correct button. In January 2017, The Japan Sanitary Equipment Industry Association, a consortium of companies producing plumbing products including Toto Ltd., Panasonic, and Toshiba, has agreed to unify the iconography used on the often baffling control panels for Japanese toilets. The toilet manufacturers plan to implement the eight new pictogram on models released from 2017 onward, with a view to the system becoming an international