Before requesting a feature, please search for existing issues.

Is your feature request related to a problem? Please describe.

When I am trying to render a latex - \frac{\style{font-size:14px}R\style{font-size:14px}{\mathit=}\style{font-size:14px}\rho\style{font-size:14px}{\mathit\;}\style{font-size:14px}l}{\style{font-size:14px}A}

The latex is generated using Wiris's MathType Plugin.

Link to or name of a (La)TeX package that provides the same feature:

KaTeX's general goal is to render as LaTeX does.
When the same latex is entered here - http://www.wiris.com/editor/demo/en/developers - it renders as expected.