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| Subject | English | Norwegian Bokmål |
| comp., MS | crossing extent | krysningsområde (The extent of a crossing file occupying space on the volume of the owning file) |
| comp., MS | disk extent | diskområde (A contiguous run of sectors on one disk) |
| el., sec.sys. | extent of zone | utstrekning av sone |
| light. | geometric extent of a beam of rays | geometrisk omfang |