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  2. Watermark - Wikipedia

    en.wikipedia.org/wiki/Watermark

    Watermark. A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper. [ 1] Watermarks have been used on postage stamps, currency, and other ...

  3. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    gDoc Fusion: Proprietary/shareware to view PDF, XPS, Microsoft Word document, Microsoft Excel spreadsheet, Microsoft PowerPoint presentation or image files, included in the evaluation version of the product. Shareware version places a watermark on documents after 30-day eval. Google Chrome: Includes a PDF viewer.

  4. Digital watermarking - Wikipedia

    en.wikipedia.org/wiki/Digital_watermarking

    A digital watermark is a kind of marker covertly embedded in a noise-tolerant signal such as audio, video or image data. [ 1] It is typically used to identify ownership of the copyright of such a signal. Digital watermarking is the process of hiding digital information in a carrier signal; the hidden information should, [ 2] but does not need ...

  5. Google Docs - Wikipedia

    en.wikipedia.org/wiki/Google_Docs

    Google Docs is an online word processor and part of the free, web-based Google Docs Editors suite offered by Google, which also includes Google Sheets, Google Slides, Google Drawings, Google Forms, Google Sites and Google Keep. Google Docs is accessible via an internet browser as a web-based application and is also available as a mobile app on ...

  6. LibreOffice - Wikipedia

    en.wikipedia.org/wiki/LibreOffice

    LibreOffice ( / ˈliːbrə /) [ 11] is a free and open-source office productivity software suite, a project of The Document Foundation (TDF). It was forked in 2010 from OpenOffice.org, an open-sourced version of the earlier StarOffice. It consists of programs for word processing; creating and editing spreadsheets, slideshows, diagrams, and ...

  7. Microsoft Word - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Word

    Microsoft Word is a word processor program developed by Microsoft.It was first released on October 25, 1983, [9] under the name Multi-Tool Word for Xenix systems. [10] [11] [12] Subsequent versions were later written for several other platforms including: IBM PCs running DOS (1983), Apple Macintosh running the Classic Mac OS (1985), AT&T UNIX PC (1985), Atari ST (1988), OS/2 (1989), Microsoft ...

  8. Adolfo Kaminsky - Wikipedia

    en.wikipedia.org/wiki/Adolfo_Kaminsky

    9 January 2023. (2023-01-09) (aged 97) Paris, France. Occupation. Forger of documents. Adolfo Kaminsky (or Adolphe; 1 October 1925 – 9 January 2023) was an Argentine-born member of the French Resistance, specializing in the forgery of identity documents (IDs), and photographer. During World War II, he forged papers that saved the lives of ...

  9. DjVu - Wikipedia

    en.wikipedia.org/wiki/DjVu

    Describes a single page. Can either be at the root of a document and be a single-page document or referred to from a DIRM chunk. FORM:DJVM — Describes a multi-page document. Is the document's root chunk. FORM:DJVI FORM:DJVM: Contains data shared by multiple pages. FORM:THUM FORM:DJVM: Contains thumbnails. INFO FORM:DJVU: Must be the first chunk.