L.1.9.1 Font References

Within a WordprocessingML document, font face information can be referenced by any set of run properties, both as part of a style definition or direct formatting on one or more runs in the document’s contents. This reference is established by referencing the primary name of the font face that is used in the rFonts element of the run properties, linking that run with the desired font face.

For example, consider a run of text that has been directly formatted to use the Arial This setting would be specified as follows on the run’s properties:

<w:r>
  <w:rPr>
    <w:rFonts w:ascii="Arial Black" w:hAnsi="Arial Black" />
  </w:rPr>
  <w:t>This run of text uses the Arial Black font face.</w:t>
</w:r>

The rFonts element specifies that the run should be formatted using the Arial Black font face. Applications can then look up and use the font with primary name of Arial Black when formatting this run.