# Known Issues With MathML

The following are known Amaya MathML issues:

- Amaya implements only the Presentation Tags from MathML 2.0, not the Content Markup. All presentation elements and attributes are available, but only the following attributes are rendered on the screen:

  `display, alttext, mathvariant, mathsize, mathcolor, mathbackground, fontsize, fontweight, fontstyle, fontfamily, color, linethickness, numalign, denomalign, bevelled, notation, lquote, rquote, lspace, rspace, largeop, movablelimits, subscriptshift, superscriptshift, form, width` (mspace only), `height` (mspace only), `depth` (mspace only), `align, rowalign, columnalign, frame, framespacing, displaystyle, side, rowspan, columnspan, rowspacing, columnspacing, rowlines, columnlines`.

- The `class`, `id`, and `style` attributes are available, with the same semantics as in HTML: you can associate CSS styles with MathML elements (`class` and `style` attributes) and a MathML element can be the target of a link (`id` attribute).
- Due to the lack of mathematical fonts in the current version, only a limited set of entities representing math symbols are recognized, mainly those available in the Symbol font. The current version supports the following:

  `Therefore, SuchThat, DownTee, Or, And, Not, Exists, ForAll, Element, NotElement, NotSubset, Subset, SubsetEqual, Superset, SupersetEqual, DoubleLeftArrow, DoubleLeftRightArrow, DoubleRightArrow, LeftArrow, LeftRightArrow, RightArrow, Congruent, GreaterEqual, le, NotEqual, Proportional, VerticalBar, Union, Intersection, PlusMinus, CirclePlus, Sum, Integral, CircleTimes, Product, CenterDot, Diamond, PartialD, DoubleDownArrow, DoubleUpArrow, DownArrow, UpArrow, ApplyFunction, TripleDot, DifferentialD, ImaginaryI, ExponentialE, InvisibleComma, UnderBar, OverBar, ThinSpace, ThickSpace, Hat, OverBar, UnderBar, prime, Prime.`