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  2. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  3. List of Microsoft Office filename extensions - Wikipedia

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

    Excel-related file extensions of this format include:.xlsx – Excel workbook.xlsm – Excel macro-enabled workbook; same as xlsx but may contain macros and scripts.xltx – Excel template.xltm – Excel macro-enabled template; same as xltx but may contain macros and scripts; Other formats Microsoft Excel uses dedicated file formats that are ...

  4. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    Most file systems include attributes of files and directories that control the ability of users to read, change, navigate, and execute the contents of the file system. In some cases, menu options or functions may be made visible or hidden depending on a user's permission level; this kind of user interface is referred to as permission-driven.

  5. Unicode control characters - Wikipedia

    en.wikipedia.org/wiki/Unicode_control_characters

    However, directionality may not be detected correctly if left-to-right text is quoted at the beginning of a right-to-left paragraph (or vice versa), [2] and the support for bidirectional text becomes even more complicated when text flowing in opposite directions is embedded hierarchically, for example if an English text quotes an Arabic phrase ...

  6. Microsoft Office XML formats - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office_XML_formats

    Besides differences in the schema, there are several other differences between the earlier Office XML schema formats and Office Open XML. Whereas the data in Office Open XML documents is stored in multiple parts and compressed in a ZIP file conforming to the Open Packaging Conventions, Microsoft Office XML formats are stored as plain single monolithic XML files (making them quite large ...

  7. Unicode input - Wikipedia

    en.wikipedia.org/wiki/Unicode_input

    If an application does not have access to a glyph for a required codepoint in the specified font, [a] the character should be shown as the font's .notdef glyph ○ . [3] This often appears as an empty box, ☐ (nicknamed " tofu " based on the shape), a box with an X in it, ☒, a diamond with a question mark, , or a box with a question mark in ...

  8. Text file - Wikipedia

    en.wikipedia.org/wiki/Text_file

    DOS and Microsoft Windows use a common text file format, with each line of text separated by a two-character combination: carriage return (CR) and line feed (LF). It is common for the last line of text not to be terminated with a CR-LF marker, and many text editors (including Notepad) do not automatically insert one on the last line.

  9. Time formatting and storage bugs - Wikipedia

    en.wikipedia.org/wiki/Time_formatting_and...

    The last modification date stamp (and with DELWATCH 2.0+ also the file deletion date stamp, and since DOS 7.0+ optionally also the last access date stamp and creation date stamp), are stored in the directory entry with the year represented as an unsigned seven bit number (0–127), relative to 1980, and thereby unable to indicate any dates in ...