| Element | Attribute | Values | Default | Support |
|---|---|---|---|---|
| maction | actiontype | (tooltip) | #REQUIRED | Yes |
| math | display | (block | inline) | inline | Yes |
| xmlns | http://www.w3.org/1998/Math/MathML | #REQUIRED | ||
| menclose | notation | (bottom | box | left | right | top | horizontalstrike) | #REQUIRED | Yes |
| merror | Yes | |||
| mfenced | open | CDATA | ( | Yes |
| close | CDATA | ) | ||
| mfrac | linethickness | (0 | 1 | 2 | medium | thick) | medium | Yes |
| mi | mathvariant | (normal | bold | italic | bold-italic | sans-serif | bold-sans-serif | sans-serif-italic | sans-serif-bold-italic | monospace) | italic | Yes |
| mn | mathvariant | (normal | bold | italic | bold-italic | sans-serif | bold-sans-serif | sans-serif-italic | sans-serif-bold-italic | monospace) | normal | Yes |
| mo | mathvariant | (normal | bold | italic | bold-italic | sans-serif | bold-sans-serif | sans-serif-italic | sans-serif-bold-italic | monospace) | normal | Yes |
| largeop | (true | false) | false | ||
| separator | (true | false) | false | ||
| form | (prefix | infix | postfix) | context dependent | ||
| mover | Yes | |||
| mphantom | Yes | |||
| mroot | Yes | |||
| mrow | Yes | |||
| ms | mathvariant | (normal | bold | italic | bold-italic | sans-serif | bold-sans-serif | sans-serif-italic | sans-serif-bold-italic | monospace) | normal | Yes |
| lquote | CDATA | " | ||
| rquote | CDATA | " | ||
| mspace | linebreak | (auto | newline | goodbreak) | auto | Yes |
| msqrt | Yes | |||
| msub | Yes | |||
| msubsup | Yes | |||
| msup | Yes | |||
| mtable | frame | (none | solid | dashed) | none | Yes |
| rowalign | (top | bottom | center | baseline) | baseline | ||
| columnalign | (left | center | right) | center | ||
| rowlines | (none | solid | dashed) | none | ||
| columnlines | (none | solid | dashed) | none | ||
| mtd | rowalign | (top | bottom | center | baseline) | baseline | Yes |
| columnalign | (left | center | right) | center | ||
| mtext | mathvariant | (normal | bold | italic | bold-italic | sans-serif | bold-sans-serif | sans-serif-italic | sans-serif-bold-italic | monospace) | normal | Yes |
| mtr | rowalign | (top | bottom | center | baseline) | baseline | Yes |
| columnalign | (left | center | right) | center | ||
| munder | Yes | |||
| munderover | Yes |
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