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When an inline formula is long enough, it can be helpful to allow it to break across lines. Whether using LaTeX or templates, split the formula at each acceptable breakpoint into separate <math> tags or {} templates with any binary relations or operators and intermediate whitespace included at the trailing rather than leading end of a part.
The template is meant to be used with alphabetic text, typically one or a few capital letters. If the body contains an exposed equals-sign ("="), it will fail to render. For example, the following template use produces no result: {{mathcal|P=NP}}. There are two ways to resolve this. Method 1: Start the body with "1=", as in: {{mathcal|1=P=NP}},
Used to indicate word boundaries to text processing systems when using scripts that do not use explicit spacing. It is similar to the soft hyphen , with the difference that the latter is used to indicate syllable boundaries, and should display a visible hyphen when the line breaks at it.
The formula's background and font size match the rest of HTML contents (this can be fixed on TeX formulas by using the commands \pagecolor and \definecolor) and the appearance respects CSS and browser settings while the typeface is conveniently altered to help you identify formulae.
In many cases breaking up a word with a space would be inappropriate. Soft hyphens also creates word-break opportunities, but will add a hyphen rather than a space. In other words, a soft hyphen is a hyphen inserted into a word not otherwise hyphenated, to be displayed or typeset only if it falls at the end of a line of text.
Kerning contrasted with tracking (letter-spacing): with spacing the "kerning perception" is lost. While tracking adjusts the space between characters evenly, regardless of the characters, kerning adjusts the space based on character pairs. There is strong kerning between the "V" and the "A", and no kerning between the "S" and the "T".
A second common application of non-breaking spaces is in plain text file formats such as SGML, HTML, TeX and LaTeX, whose rendering engines are programmed to treat sequences of whitespace characters (space, newline, tab, form feed, etc.) as if they were a single character (but this behavior can be overridden).
For a formula on its own line the preferred formatting is the LaTeX markup, with a possible exception for simple strings of Latin letters, digits, common punctuation marks, and arithmetical operators. Even for simple formulae the LaTeX markup might be preferred if required for uniformity within an article.