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.. _tex-bbox:
####
bbox
####
The `bbox` extension defines a new macro for adding background colors,
borders, and padding to your math expressions.
.. describe:: \\bbox[options]{math}
puts a bounding box around ``math`` using the provided ``options``.
The options can be one of the following:
1. A color name used for the background color.
2. A dimension (e.g., ``2px``) to be used as a padding around the
mathematics (on all sides).
3. Style attributes to be applied to the mathematics (e.g.,
``border: 1px solid red``).
4. A combination of these separated by commas.
Here are some examples:
.. code-block:: latex
\bbox[red]{x+y} % a red box behind x+y
\bbox[2pt]{x+1} % an invisible box around x+y with 2pt of extra space
\bbox[red,2pt]{x+1} % a red box around x+y with 2pt of extra space
\bbox[5px, border: 2px solid red]
% a 2px red border around the math 5px away
This extension is loaded automatically when the `autoload` extension
is used. To load the `bbox` extension explicitly, add
``'[tex]/bbox'`` to the ``load`` array of the ``loader`` block of
your MathJax configuration, and add ``'bbox'`` to the ``packages``
array of the ``tex`` block.
.. code-block:: javascript
window.MathJax = {
loader: {load: ['[tex]/bbox']},
tex: {packages: {'[+]': ['bbox']}}
};
Alternatively, use ``\require{bbox}`` in a TeX expression to load it
dynamically from within the math on the page, if the `require`
extension is loaded.
-----
.. _tex-bbox-commands:
bbox Commands
-------------
The `bbox` extension implements the following macros:
``\bbox``
|-----|
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