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  2. Upside-down question and exclamation marks - Wikipedia

    en.wikipedia.org/wiki/Upside-down_question_and...

    Upside-down marks, simple in the era of hand typesetting, were originally recommended by the Real Academia Española (Royal Spanish Academy), in the second edition of the Ortografía de la lengua castellana (Orthography of the Castilian language) in 1754 [3] recommending it as the symbol indicating the beginning of a question in written Spanish—e.g. "¿Cuántos años tienes?"

  3. Necrotizing periodontal diseases - Wikipedia

    en.wikipedia.org/wiki/Necrotizing_periodontal...

    Necrotizing gingivitis: painful, bleeding, sloughing ulceration and loss of the interdental papillae (usually of the lower front teeth) Necrotizing gingivitis, is a common, non-contagious infection of the gums.

  4. Necrotizing gingivitis - Wikipedia

    en.wikipedia.org/wiki/Necrotizing_gingivitis

    The main features are painful, bleeding gums, and ulceration of interdental papillae (the sections of gum between adjacent teeth). This disease, along with necrotizing periodontitis (NP) and necrotizing stomatitis, is classified as a necrotizing periodontal disease , one of the three general types of gum disease caused by inflammation of the ...

  5. Wikipedia : Differences between the English Wikipedia and ...

    en.wikipedia.org/wiki/Wikipedia:Differences...

    Fair-use images are not permitted, all images must be uploaded to Commons.; Users are generally not allowed to remove (blank) comments even from their own talk pages. With regards to notability, habilitation is sufficient to meet WP:NPROF.

  6. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    While MS-DOS and NT always treat the suffix after the last period in a file's name as its extension, in UNIX-like systems, the final period does not necessarily mean that the text after the last period is the file's extension. [1] Some file formats, such as .txt or .text, may be listed multiple times.

  7. Ñ - Wikipedia

    en.wikipedia.org/wiki/Ñ

    ñ has its own key in the Spanish and Latin American keyboard layouts (see the corresponding sections at keyboard layout and Tilde#Role of mechanical typewriters). The following instructions apply only to English-language keyboards. On Android devices, holding N or n down on the keyboard makes entry of Ñ and ñ possible.

  8. File comparison - Wikipedia

    en.wikipedia.org/wiki/File_comparison

    Displaying the differences between two or more sets of data, file comparison tools can make computing simpler, and more efficient by focusing on new data and ignoring what did not change. Generically known as a diff [ 1 ] after the Unix diff utility , there are a range of ways to compare data sources and display the results.

  9. Native and foreign format - Wikipedia

    en.wikipedia.org/wiki/Native_and_foreign_format

    However, when these text files or documents are opened, they are not necessarily edited in their original format. Instead, the document writer may first convert the file into its own native data structure. Once the file is done being edited, the application will then convert the file back to its original format.