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  2. Combining character - Wikipedia

    en.wikipedia.org/wiki/Combining_character

    For example, U+0364 is an e written above the preceding letter, to be used for New High German umlaut notation, such as uͤ for Modern German ü. Combining Diacritical Marks Extended [1] [2] Official Unicode Consortium code chart (PDF)

  3. List of Unicode characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Unicode_characters

    HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name.

  4. Trifid cipher - Wikipedia

    en.wikipedia.org/wiki/Trifid_cipher

    The trifid cipher is a classical cipher invented by Félix Delastelle and described in 1902. [1] Extending the principles of Delastelle's earlier bifid cipher, it combines the techniques of fractionation and transposition to achieve a certain amount of confusion and diffusion: each letter of the ciphertext depends on three letters of the plaintext and up to three letters of the key.

  5. List of Microsoft Office filename extensions - Wikipedia

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

    Microsoft Excel uses dedicated file formats that are not part of OOXML, and use the following extensions:.xlsb – Excel binary worksheet (BIFF12).xla – Excel add-in that can contain macros.xlam – Excel macro-enabled add-in.xll – Excel XLL add-in; a form of DLL-based add-in [1].xlw – Excel work space; previously known as "workbook"

  6. Wikipedia : TLAs from AAA to DZZ

    en.wikipedia.org/wiki/Wikipedia:TLAs_from_AAA_to_DZZ

    This table of three-letter acronyms contains links to all letter-letter-letter combinations from AAA to DZZ, listed in the form [[{{letter}}{{letter}}{{letter}}]].. As specified at Wikipedia:Disambiguation#Combining terms on disambiguation pages, terms which differ only in capitalisation are commonly combined into a single disambiguation page.

  7. Kerning - Wikipedia

    en.wikipedia.org/wiki/Kerning

    These letters can be added to the class of the base letter, and can stay together whether they are the first or second character in a pair: (a à á â), (e è é ê), etc. A letter cannot be included in the class if its kerning is different from the others in certain pairs (for example, Yá vs. Yä).

  8. List of forms of word play - Wikipedia

    en.wikipedia.org/wiki/List_of_forms_of_word_play

    RAS syndrome: repetition of a word by using it both as a word alone and as a part of the acronym; Recursive acronym: an acronym that has the acronym itself as one of its components; Acrostic: a writing in which the first letter, syllable, or word of each line can be put together to spell out another message Mesostic: a writing in which a ...

  9. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...