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[from automotive or musical usage]

vt. To optimize a program or system for a particular environment, esp. by adjusting numerical parameters designed as hooks for tuning, e.g., by changing '#define' lines in C. One may 'tune for time' (fastest execution), 'tune for space' (least memory use), or 'tune for configuration' (most efficient use of hardware).

See bum, hot spot, hand-hacking.