mark is one of
the most common of modern ideograms. The vertical line, , denotes something that is absolute and powerful (see
in Group 10). The dot
or point, , represents a beginning, an
end, or the focus of something. Taken together they mean
in typography that whatever is denoted by the signs immediately before
the mark of exclamation is incredible, strange, very important, or
Seriousness is another basic meaning of . See in Group 24 for an example.
The exclamation mark often appears as an independent ideogram in comics, advertising and chess. When it is used in the game of chess it means a good move.
In other situations can signify something dangerous or an unspecified danger.
In the IT subculture stands for not (from the C programming language). See also in Group 10.