Figure 8: Structure of <figure>
A formula can be described in five different ways which can exist parallel. These are:

<graphic>
A formula prerendered as a figure.
<verbatim>
A simple ASCII formula.
<tex-math>
A TeX math formula which can be processed by a TeX or LaTeX processor.
<c-code>
A formula which is defined as c-code.
<generic-math>
This element is intended for the definition of semantic math descriptions which can be processed by math processors. Actually there is no recommentation for the language of the formula specification or usage of a special rendering system.

It is up to the rendering system which of the available representations is used.