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A PDF page description can use a matrix to scale, rotate, or skew graphical elements. A key concept in PDF is that of the graphics state, which is a collection of graphical parameters that may be changed, saved, and restored by a page description. PDF has (as of version 2.0) 25 graphics state properties, of which some of the most important are:
Further information about printed books can be found on the FAQ page, and at the Printed books help page, including cost and format details. Softcopy books from MediaWiki2LaTeX MediaWiki2LaTeX is an external pull service which can convert a Wikipedia book to a range of softcopy formats including PDF, LaTeX, ePub (x/html) and ODT (Open Document ...
BookStack is a free and open-source wiki software aimed for a simple, self-hosted, and easy-to-use platform. Based on Laravel, a PHP framework, BookStack is released under the MIT License. It uses the ideas of books to organise pages and store information. [3] BookStack is multilingual and available in over thirty languages. [2]
The extraction of text from page images is a difficult engineering task. Smudges on the physical books' pages, fancy fonts, old fonts, torn pages, etc. can all lead to errors in the extracted text. Imperfect OCR is only the first challenge in the ultimate goal of moving from collections of page images to extracted-text based books.
The Library Journal and Biblioboard worked together to create a self-publishing platform called Self-e in which authors submitted books online which were made available to readers. These books are reviewed by Library Journal, and the best ones are published nationwide; authors do not make money this way but it serves as a marketing tool. [18]
A book is a medium for recording information in the form of writing or images. Modern books are typically in codex format, composed of many pages that are bound together and protected by a cover; they were preceded by several earlier formats, including the scroll and the tablet.
FlexBook is a textbook authoring platform developed by the CK-12 Foundation launched in 2008, focused on textbooks for the K-12 market. Derived from the words "flexibility" and "textbook," a FlexBook allows users to produce and customize content by re-purposing educational content using different modules.
PDFtk (short for PDF Toolkit) is a toolkit for manipulating Portable Document Format (PDF) documents. [ 3 ] [ 4 ] It runs on Linux , Windows and macOS . [ 5 ] It comes in three versions: PDFtk Server ( open-source command-line tool ), PDFtk Free ( freeware ) and PDFtk Pro ( proprietary paid ). [ 2 ]