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A set of attributes that bear on the
relationship between the level of performance of the software and
the amount of resources used, under stated conditions. (ISO 9126:
1991, 4.4)
NOTE -- Resources may include other software products, hardware
facilities, materials, (e.g. print paper, floppy disks) and
services of operating, maintaining or sustaining staff. (ISO 9126:
1991, 4.4)
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