# Allow to define KaTeX macros

It would be great if users could create custom macros (https://katex.org/docs/options.html) for commonly-used mathematical notations.

For example, if you make a presentation that uses all over the place $\mathbb{R}$ (the ensemble of real numbers), it'd be great to be able to define it as a macro, e.g. \RR, as a short-hand notation.

**4**votes

Corentin Cadiou
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