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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 August 2024. Portable Document Format, a digital file format For other uses, see PDF (disambiguation). Portable Document Format Adobe PDF icon Filename extension.pdf Internet media type application/pdf, application/x-pdf application/x-bzpdf application/x-gzpdf Type code PDF (including a single ...

  3. Optical character recognition - Wikipedia

    en.wikipedia.org/wiki/Optical_character_recognition

    Video of the process of scanning and real-time optical character recognition (OCR) with a portable scanner. Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and ...

  4. Wikipedia:Citing sources

    en.wikipedia.org/wiki/Wikipedia:Citing_sources

    In the first part, each section of text that is either based on, or quoted from, an outside source is marked as such with an inline citation. This is usually displayed as a superscript footnote number: [1] The second necessary part of the citation or reference is the list of full references, which provides complete, formatted detail about the ...

  5. Text annotation - Wikipedia

    en.wikipedia.org/wiki/Text_annotation

    Text annotation is the practice and the result of adding a note or gloss to a text, which may include highlights or underlining, comments, footnotes, tags, and links. Text annotations can include notes written for a reader's private purposes, as well as shared annotations written for the purposes of collaborative writing and editing, commentary ...

  6. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    This is a list of links to articles on software used to manage Portable Document Format (PDF) documents. The distinction between the various functions is not entirely clear-cut; for example, some viewers allow adding of annotations, signatures, etc.

  7. Screen reader - Wikipedia

    en.wikipedia.org/wiki/Screen_reader

    Screen reader. An example of someone using a screen reader showing documents that are inaccessible, readable and accessible. A screen reader is a form of assistive technology (AT) [1] that renders text and image content as speech or braille output. Screen readers are essential to people who are blind, [2] and are useful to people who are ...

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