Seven months after the first iMacs shipped with Thunderbolt, there are only a couple of Thunderbolt-capable peripherals available. Why? At Macworld, Joel Mathis looks into that question, suggesting that the problem revolves around Thunderbolt’s complexity and cost. follow link
Undo in Game Your Video
While editing a video, if you have applied an effect that you want to remove, use the Undo option. To do this, just double-tap the portion of the video where you want to remove the applied effect. This patch will snap to the Timeline and a Cancel button will appear. Tap it to remove the effect.
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Where Are the Thunderbolt Devices?