def link(name, url):
	"""
	Create popover of variable in html.

	Parameters
	----------
	name : :class:`str`
		Name of variable.
	url : :class:`str`
		URL to link to.

	Returns
	-------
	link : :class:`str`
		HTML <a> element.

	Examples
	--------
	>>> link(name=roi, url="#boxplot")

	.. code-block:: html

		<a href="#boxplot" class="anchor">roi</a>
	"""

	_link = '<a href="%s" class="anchor">%s</a>' % (url, name)

	return _link