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MathML Test : Token elements

Identifier (mi)

This element must be rendered "normal" if there are several characters and "italic" if there is only one. There should be no space arround it. MathML editors can use an empty mi to represent a placeholder.

• one character : $a$
• several characters : $\sin$
• spaces : $\text{sometext}\mathrm{MI}\text{sometext}$
• empty : $$

Number (mn)

The element should be diplayed with an unslanted font and without space arround.

• an integer : $57$
• spaces : $\text{sometext}9.9\text{sometext}$

Operator, Fence, Separator or Accent (mo)

See the page Operator, Fence, Separator or Accent for more details.

• operator : $a+b$
• fence : $\left(x\right)$
• separator : $;$

Text (mtext)

This element allows to include commentary text in mathematical formulae. There is no space arround but it can be used to include special characters representing space.

• mtext between mi elements : $M\text{sometext}M$
• text in a piecewise : $\mid x\mid =\{\begin{array}{c}x\text{if}x\ge 0\\ -x\text{otherwise}\end{array}$

Space (mspace)

See the page Space for more details.

• [$$]

String Literal (ms)

The content of an ms element is typically rendered with no extra spacing added arround the string, and a quote character " at the beginning and the end of the string.

• no attribute :$''a\; string\; of\; length\; 21''$
• lquote = "'" : $'a\; string\; of\; length\; 21''$
• rquote = "»" : $''a\; string\; of\; length\; 21»$

When the string contains special characters such as quote, they should be rendered with a special notation, showing that the expression is really a string literal. For instance :

• string containing a quote (\") : $''"''$
• string containing a tab (\t) : $''''$
• string containing a linebreak (\n) : $''''$

Accessing glyphs for characters from MathML (mglyph)

This element allows to insert a special character from a font. The alt attribute is mandatory.

• mglyph : [$\mathrm{<mglyph\; fontfamily="OpenSymbol"\; alt="computer"></mglyph>}$]