# empheq

The empheq extension partially implements the `empheq` style package from LaTeX. The package provides macros and environments for emphasising equations. See the list of control sequences for details about what commands are implemented in this extension. Note, that the current implementation of the `empheq` environment supports only the `left` and `right` options. Also see the CTAN page for more information and documentation of empheq.

This package is not autoloaded, so you must request it explicitly if you want to use it. To load the empheq extension, add `'[tex]/empheq'` to the `load` array of the `loader` block of your MathJax configuration, and add `'empheq'` to the `packages` array of the `tex` block.

    window.MathJax = {
      loader: {load: ['[tex]/empheq']},
      tex: {packages: {'[+]': ['empheq']}}
    };

You can configure the autoload extension to load empheq when the `empheq` environment is first used via

    window.MathJax = {
      tex: {
        autoload: {
          empheq: [[], ['empheq']]
        }
      }
    };

Alternatively, use `\require{empheq}` in a TeX expression to load it dynamically from within the math on the page, if the require extension is loaded.

## empheq Commands

The empheq extension implements the following macros: `\empheqbigl`, `\empheqbiglangle`, `\empheqbiglbrace`, `\empheqbiglbrack`, `\empheqbiglceil`, `\empheqbiglfloor`, `\empheqbiglparen`, `\empheqbiglvert`, `\empheqbiglVert`, `\empheqbigr`, `\empheqbigrangle`, `\empheqbigrbrace`, `\empheqbigrbrack`, `\empheqbigrceil`, `\empheqbigrfloor`, `\empheqbigrparen`, `\empheqbigrvert`, `\empheqbigrVert`, `\empheql`, `\empheqlangle`, `\empheqlbrace`, `\empheqlbrack`, `\empheqlceil`, `\empheqlfloor`, `\empheqlparen`, `\empheqlvert`, `\empheqlVert`, `\empheqr`, `\empheqrangle`, `\empheqrbrace`, `\empheqrbrack`, `\empheqrceil`, `\empheqrfloor`, `\empheqrparen`, `\empheqrvert`, `\empheqrVert`

And the following environments: `empheq`