Operation Manual

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3. Click OK. The preference affects subsequently opened images. No restart is necessary.
For more information, see:
GPU and OpenGL support | Photoshop CS4, CS5 (kb404898)
GPU and OpenGL features and preferences | Photoshop and Bridge CS5, CS4 (kb405745)
Tested video cards | Photoshop CS5 (cpsid_83117)
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