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  2. Optical storage media writing and reading speed - Wikipedia

    en.wikipedia.org/wiki/Optical_storage_media...

    For example, writing to a CD at 8× will be twice as fast as writing onto a disc at 4×. [2] There are two main types of disc speed, which are the angular and linear velocities. If the disc spins at a constant angular velocity, the linear velocity is 2.4 times higher at the outer edge.

  3. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    To save the PDF document along with a modified form or annotation data; Import form data files in FDF, XFDF, and text (CSV/TSV) formats; Export form data files in FDF and XFDF formats; Submit form data; Instantiate new pages from named page templates; Apply a digital signature to existing digital signature form field

  4. Document file format - Wikipedia

    en.wikipedia.org/wiki/Document_file_format

    PalmDoc — handheld document format.pages for Pages; PDF — Open standard for document exchange. ISO standards include PDF/X (eXchange), PDF/A (Archive), PDF/E (Engineering), ISO 32000 (PDF), PDF/UA (Accessibility) and PDF/VT (Variable data and transactional printing). PDF is readable on almost every platform with free or open source readers.

  5. List of Microsoft Office filename extensions - Wikipedia

    en.wikipedia.org/wiki/List_of_Microsoft_Office...

    Pertaining file extensions include:.docx – Word document.docm – Word macro-enabled document; same as docx, but may contain macros and scripts.dotx – Word template.dotm – Word macro-enabled template; same as dotx, but may contain macros and scripts; Other formats.pdfPDF documents.wll – Word add-in.wwl – Word add-in

  6. PDF/X - Wikipedia

    en.wikipedia.org/wiki/PDF/X

    PDF/X is a subset of the ISO standard for PDF.The purpose of PDF/X is to facilitate graphics exchange, and it therefore has a series of printing-related requirements which do not apply to standard PDF files.

  7. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    4 mp4 ISO Base Media file (MPEG-4) 66 74 79 70 4D 53 4E 56: ftypMSNV: 4 mp4 MPEG-4 video file 78 01: x␁ 0 zlib No Compression (no preset dictionary) 78 5E: x^ Best speed (no preset dictionary) 78 9C: xœ: Default Compression (no preset dictionary) 78 DA: xÚ: Best Compression (no preset dictionary) 78 20: x␠ No Compression (with preset ...

  8. File size - Wikipedia

    en.wikipedia.org/wiki/File_size

    File size is a measure of how much data a computer file contains or how much storage space it is allocated. Typically, file size is expressed in units based on byte . A large value is often expressed with a metric prefix (as in megabyte and gigabyte ) or a binary prefix (as in mebibyte and gibibyte ).

  9. Office Open XML file formats - Wikipedia

    en.wikipedia.org/wiki/Office_Open_XML_file_formats

    A basic package contains an XML file called [Content_Types].xml at the root, along with three directories: _rels, docProps, and a directory specific for the document type (for example, in a .docx word processing package, there would be a word directory). The word directory contains the document.xml file which is the core content of the document.