MathML-specific types

In addition toCSS data types, some MathML attributes accept the following types:

• <unsigned-integer>: An<integer>, whose first character is neither U+002D HYPHEN-MINUS character (-) nor U+002B PLUS SIGN (+); for example1234.
• <boolean>: A stringtrue orfalse representing a boolean value.

Legacy MathML lengths

Instead of<length-percentage>, MathML used to define its owntype to describe lengths. Accepted values included non-zero unitless length values (e.g.,5 to mean500%), values containing numbers ending with a dot (e.g.,34.px), or named spaces (e.g.,thinmathspace). For compatibility reasons, it is recommended to replace non-zero unitless length values with equivalent<percentage> values, to remove unnecessary dots in numbers, and to use the following replacement for named lengths:

veryverythinmathspace  => 0.05555555555555555emverythinmathspace      => 0.1111111111111111emthinmathspace          => 0.16666666666666666emmediummathspace        => 0.2222222222222222emthickmathspace         => 0.2777777777777778emverythickmathspace     => 0.3333333333333333emveryverythickmathspace => 0.3888888888888889em

Units

Constants

Browser compatibility