Information technology -- Keyboard layouts for text and office systems -- Part 5: Editing section
Specifies the editing section and the division of that section into zones. Also specifies the cursor zone (ZEO) of the editing section and the allocation of functions to its keys. Specifies the arrangement, the number, and the location of the keys in the editing zones of the editing section as well as guidelines for the allocation of functions to the keys.
Стандарт, который пересматривается каждые 5 лет