A vent for a roof, said vent 2 includes a box 4, shaped to be a somewhat vertical chimney, in order to maximize an upward hot air flow out of the vent. The following features of the tree and its fruit are characterized with the tree budded on \u2018Nemaguard\u2019 Rootstock, grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif. Based on this comparison result, different track pitches for the first area and the second area are determined. The media server then determines whether the requested media asset needs to be loaded from the tertiary storage.