17.3.2.1 b
This element specifies whether the bold property shall be applied to all non-complex script characters in the contents of this run when displayed in a document.
This formatting property is a toggle property (17.7.3).
If this element is not present, the default value is to leave the formatting applied at previous level in the style hierarchy. If this element is never applied in the style hierarchy, then bold shall not be applied to non-complex script characters.
[Example: Consider a run of text which must have the b property explicitly turned off for the non complex script contents of the run. This constraint is specified using the following WordprocessingML:
<w:rPr>
<w:b w:val="false"/>
</w:rPr>
This run explicitly declares that the b property is false for the non-complex script contents of this run. end example]
This element’s content model is defined by the common boolean property definition in 17.17.4.