<programming> An index or position in an array, string, or block of memory usually a non-negative integer.

E.g. the Perl function splice(ARRAY, OFFSET, LENGTH, LIST) replaces LENGTH elements starting at index OFFSET in array with LIST, where offset zero means the start of the array.

For an Intel x86 processor with a segmented address space the offset is the position of a byte relative to the start of the segment.

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Office By Example
Office Workstations Limited
Official Production System
off-line world
32-bit application
direct mapped cache
Early PL/I
flat address space
off-side rule
off the trolley
Ogg Vorbis