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Read-only release history for PDF - OCR . Contribute to gitpan/ PDF - OCR development by creating an account on GitHub. All Quartz 2D data structures and API calls have a CG prefix, which stands for Core Graphics. CGContextRef is a pointer to a Quartz data structure for the artist canvas. UIGraphicsGetCurrentContext asks the iPhone for the current view. Unlike with desktop operating systems, there is only one window within the phone, and thus one context. You can think of the context as a physical canvas. Like a canvas, the context can be moved, rotated, shrunk, and stretched, and then covered in layers of paint. Imagine you are an artist with a large canvas in front of you, perhaps several feet on a side. If you have a complex scene you re trying to paint, you can rotate and move the canvas to make things easier to draw. For example, after you paint birds in the sky, you can move the canvas again, and paint the grass or ocean waves. ocr pdf mac os x free Remove OCR in Acrobat Pro X (Create PDF ) - Acrobat Answers
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