22.1.2.14 boxPr

This element specifies properties of the Box object, for example, whether the Box serves as operator emulator with or without an alignment point, serves as a line break point, or receives the correct spacing for the mathematical differential. [Example:

<m:box>
  <m:boxPr>
    <m:opEmu m:val="1"/>
  </m:boxPr>
  <m:e>
    <m:r>
      <m:t>x</m:t>
    </m:r>
  </m:e>
</m:box>

The x is set to be an operator emulator so it is given operator spacing around it.

end example]

[Note: The W3C XML Schema definition of this element’s content model (CT_BoxPr) is located in A.6.1. end note]