Shoe size "Footwear - Sizing - Vocabulary and terminology"; currently in development are companion standards ISO/TS 19409 "Footwear - Sizing - Measurement of last dimensions" and ISO/TS 19410 "Footwear - Sizing - Inshoe measurement". The adult shoe sizes are calculated from typical last length, which is converted from foot length in mm by adding an allowance of two shoe sizes: where formula_13 is foot length in mm. Direct conversion between adult UK, European and Mondopoint shoe size systems is derived as follows: Exact foot lengths may contain repeating decimals because the formulas include division by 3; in practice, approximate interval steps of
ISO/IEC 12207 specific clauses are selected or modified through the tailoring process also defined in the document. ISO/IEC 12207 ISO/IEC/IEEE 12207 "Systems and software engineering – Software life cycle processes" is an international standard for software lifecycle processes. First introduced in 1995, it aims to be a primary standard that defines all the processes required for developing and maintaining software systems, including the outcomes and/or activities of each process. ISO/IEC/IEEE 12207:2017 is the newest version, published in November 2017. The IEEE Computer Society joined directly with the International Organization for Standardization (ISO) in the editing process for this version. A significant change