Steve Jobs originally unveiled Keynote, Apple's presentation software (now costs Â£79 in the iWork bundle with its page layout program Pages and spreadsheet Numbers) back in January 2003, after beta-testing it in secret in public for a year.
Flashes (medical symptom): Flashes are visual effects where a person sees sudden flashes of light. (For flashes of warm feelings see hot flashes.) Some of the effects are like flashing lights, an arc of light, or the feeling like a light-bulb has just flashed on and off in the periphery of vision.
What does a sudden onset of an arc of slashing light on the periphery of one's eye indicate? Is this urgent or not? It is urgent and you need to see your ophthalmologist very soon. The inside of an eye is filled with a thick, clear jelly called the vitreous humor.