2.2.1 rPr Extensions

Any rPr element specified in [ISO/IEC29500-1:2016] section is extended by the addition of one or more of the following elements: glow, shadow, reflection, textOutline, textFill, scene3d, props3d, ligatures, numForm, numSpacing, stylisticSets, cntxtAlts. To maintain compatibility with ISO/IEC-29500 implementations, the element’s namespace prefix MUST be specified in an Ignorable attribute ([ISO/IEC29500-3:2015] section 7.2).