21.4.3.1 bg

This element defines formatting that can be applied to the background shape of the entire diagram. The background shape can hold formatting options just as a normal shape can hold within DrawingML.

[Example:

Consider the following example of a

<bg>
  <solidFill>
    <schemeClr val="tx1"/>
  </solidFill>
  <effectLst>
    <glow rad="152400">
      <schemeClr val="accent1">
        <alpha val="75000"/>
      </schemeClr>
    </glow>
  </effectLst>
</bg>

In this example we see a solid fill applied to the background of the diagram along with a glow. end example]

[Note: The W3C XML Schema definition of this element’s content model (CT_BackgroundFormatting) is located in A.4.1. end note]