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Non-printing characters or formatting marks are characters for content designing in word processors, which are not displayed at printing. It is also possible to customize their display on the monitor. The most common non-printable characters in word processors are pilcrow, space, non-breaking space, tab character etc. [1] [2]
Box-drawing characters, also known as line-drawing characters, are a form of semigraphics widely used in text user interfaces to draw various geometric frames and boxes. These characters are characterized by being designed to be connected horizontally and/or vertically with adjacent characters, which requires proper alignment.
Among the fonts in widespread use, [6] [7] full implementation is provided by Segoe UI Symbol and significant partial implementation of this range is provided by Arial Unicode MS and Lucida Sans Unicode, which include coverage for 83% (80 out of 96) and 82% (79 out of 96) of the symbols, respectively.
ECMA-17 / ISO 2047 symbol for form feed (page break) [15] U+2261: 8810: Identical to: Mathematical Operators ≡ : Amongst other uses, is the ECMA-17 / ISO 2047 symbol for line feed [15] U+237D: 9085: Shouldered open box: Miscellaneous Technical ⍽ Used to indicate a NBSP: U+23CE: 9166: Return symbol: Miscellaneous Technical ⏎ Symbol for a ...
Later versions of Windows and applications such as Microsoft Word supported Unicode. As Unicode included all the characters in the MSDOS code pages, this had the immediate benefit that all the old MSDOS Alt combinations worked, not just the ones that existed in the Windows Code Page.
In the Vim editor, in insert mode, the user first types Ctrl+V u (for codepoints up to 4 hex digits long; using Ctrl+V ⇧ Shift+U for longer), then types in the hexadecimal number of the symbol or character desired, and it will be converted into the symbol. (On Microsoft Windows, Ctrl+Q may be required instead of Ctrl+V. [12])
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.
In all versions of LibreOffice and in some of Microsoft Word, the special characters and symbols dialog (often available via Insert > Symbol or Insert > Special Characters), has both the thin space and the narrow no-break space available for point-and-click insertion. In LibreOffice's Symbol dialog, there is an easy-to-find box field to narrow ...