row-major 3x3 matrix used by image transformations in MuPDF (which complies with the respective concepts laid down in the Adobe PDF Reference 1.7). With matrices you can manipulate the rendered image chapter 3.10.3, pp. 184 of the Adobe PDF Reference 1.7). In many aspects, this is comparable to concepts also found in ZIP files or the OLE technique in MS Windows. PDF embedded files do, however, not

row-major 3x3 matrix used by image transformations in MuPDF (which complies with the respective concepts laid down in the Adobe PDF References). With matrices you can manipulate the rendered image of a Embedded File Streams”, pp. 103 of the Adobe PDF References). In many aspects, this is comparable to concepts also found in ZIP files or the OLE technique in MS Windows. PDF embedded files do, however, not text is covered by a drawing or an image. • Changed terminology and meaning of important geometry concepts: Rectangles are now characterized as finite, valid or empty, while the definitions of these terms