2.2.3 sdtPr Extensions

Any sdtPr element specified in [ISO/IEC29500-1:2016] section 17.5.2.38 is extended by the addition of one of the following elements: entityPicker, checkbox, repeatingSection, repeatingSectionItem, appearance, color, dataBinding, webExtensionsLinked, webExtensionCreated.  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).