plus7

Functions used as arguments to other operators.

W3C sample	WIRIS
	$x$

<math xmlns="http://www.w3.org/1998/Math/MathML">
  <apply>
    <apply>
      <plus/>
      <sin/>
      <cos/>
    </apply>
    <ci>x</ci>
  </apply>
</math>

Author: MathML Specifications