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18 wrz 2008 · A PDF document is a data structure composed from a small set of basic types of data objects. Sub-clause 7.2, "Lexical Conventions," describes the character set used to write objects and other syntactic elements. Sub-clause 7.3, "Objects," describes the syntax and essential properties of the objects.
6 lis 2022 · The purpose of this article is to explain the internal syntax and structure of of a PDF file: what you could see if you opened a PDF file in a text or binary file editor, not what you would...
In this chapter, we leave behind the bits and bytes of the PDF file, and consider the logical structure. We consider the trailer dictionary, document catalog, and page tree. We enumerate the required entries in each object. We then look at two common structures in PDF files: text strings and dates.
PDF files may contain a variety of content besides flat text and graphics including logical structuring elements, interactive elements such as annotations and form-fields, layers, rich media (including video content), three-dimensional objects using U3D or PRC, and various other data formats.
organize the data in an appropriate manner. The term data structure is used to denote a particular way of organizing data for particular types of operation. These notes will look at numerous data structures ranging from familiar arrays and lists to more complex structures
In this chapter you learned about the basic syntax of PDF, starting from the basic types of objects and moving to the structure of a PDF file. You also learned about how these objects come together to form the document and its pages, and what keys can be found in a page object.
14 gru 2018 · University of Copenhagen. References (162) Abstract. Electronic text can be defined on two different, though interconnected, levels. On the one hand, electronic text can be defined by taking the...
