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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.
In addition to drawing horizontal lines, a T-square can be used with a set square to draw vertical or diagonal lines. [1] The T-square usually has a transparent edge made of plastic which should be free of nicks and cracks in order to provide smooth, straight lines. T-squares are also used in various industries, such as construction.
Single color line drawing algorithms involve drawing lines in a single foreground color onto a background. They are well-suited for usage with monochromatic displays. The starting point and end point of the desired line are usually given in integer coordinates, so that they lie directly on the points considered by the algorithm.
An example of a multiview orthographic drawing from a US Patent (1913), showing two views of the same object. Third angle projection is used. In third-angle projection , the object is conceptually located in quadrant III, i.e. it is positioned below and behind the viewing planes, the planes are transparent , and each view is pulled onto the ...
The horizon frequently features vanishing points of lines appearing parallel in the foreground. The technique for creating a basic two-point perspective drawing, including the sight rays, the picture plane, the left and right vanishing point construction lines, the horizon line, and the ground line
If you happen not to need letter 'Z' as a separate link, as shown in the last example in the Letters section above where it is combined as "X–Z", a hack is available to add an abbreviated link to one of the footer sections. For example, to link to the "References" section as "Refs" after the letter indexes and on the same line, you can do this:
{{subst:Box Drawings Light Vertical}} or {{subst:U2502}} inserts the Unicode box-drawing character │ ("box drawings light vertical"). In typical fonts, this has more whitespace around it than an ASCII vertical bar (a│b vs. a|b) and is slightly taller. It may be used as a visual separator between items, e.g. inside a table or a template.
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