Building a Simple PDF - PDF Explained - page 22

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1. 0. 0. 1. 50. 700. cm
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(Hello, World!) Tj
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459
%%EOF
Some nonprintable characters have been added to the PDF header—this ensures
that the file is recognized as binary (rather than text) by, for example, file transfer
programs such as FTP.
The length in bytes of the stream has been filled in.
The cross-reference table has been filled in with the byte offsets of each object in the
file.
The byte offset of the start of the cross-reference table has been filled in.
The file can now be loaded into a PDF viewer. The result in Acrobat Reader on Mi-
crosoft Windows is shown in Figure 2-3 .