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  2. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    In the table below, the column "ISO 8859-1" shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. In some cases the space character is shown as ␠.

  3. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    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:

  4. Sigil (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Sigil_(computer_programming)

    For example, in C#, the "@" prefix can be used either for stropping (to allow reserved words to be used as identifiers), or as a prefix to a literal (to indicate a raw string); in this case neither use is a sigil, as it affects the syntax of identifiers or the semantics of literals, not the semantics of identifiers.

  5. Magic number (programming) - Wikipedia

    en.wikipedia.org/wiki/Magic_number_(programming)

    A constant numerical or text value used to identify a file format or protocol (for files, see List of file signatures) A distinctive unique value that is unlikely to be mistaken for other meanings (e.g., Globally Unique Identifiers)

  6. Code page - Wikipedia

    en.wikipedia.org/wiki/Code_page

    An unregistered private code page not based on an existing code page, a device specific code page like a printer font, which just needs a logical handle to become addressable for the system, a frequently changing download font, or a code page number with a symbolic meaning in the local environment could have an assignment in the private range ...

  7. Python (programming language) - Wikipedia

    en.wikipedia.org/wiki/Python_(programming_language)

    Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. [32] Python is dynamically type-checked and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional ...

  8. Object identifier - Wikipedia

    en.wikipedia.org/wiki/Object_identifier

    In computing, object identifiers or OIDs are an identifier mechanism standardized by the International Telecommunication Union (ITU) and ISO/IEC for naming any object, concept, or "thing" with a globally unambiguous persistent name.

  9. RIS (file format) - Wikipedia

    en.wikipedia.org/wiki/RIS_(file_format)

    URL addresses can be entered individually, one per tag or multiple addresses can be entered on one line using a semi-colon as a separator. These links should end with a file name, and not simply a landing page. Use the UR tag for URL links." [9] [22] Internet link. [16] Local file. [18] L2 URL. [14] "Link to Full-text.