188.8.131.52 SmartTags part
An instance of this part type contains the smart data information for all smart tag-referring text contained within the presentation.
A package shall contain at most one SmartTag part, and that part shall be the target of an explicit relationship from the Presentation part ("[ISO/IEC-29500-1] §13.3.6").
The SmartTags part is binary information that is defined in the PowerPoint 97-2003 Binary File Format (.ppt) Structure Specification (“[MS-PPT] Section 2.11.28; SmartTagStore11Container”).
A SmartTags part shall be located within the package containing the source relationship (expressed syntactically, the TargetMode attribute of the Relationship element shall be Internal).
A SmartTags part shall not have implicit or explicit relationships to any other part defined by Office Open XML File Formats [ISO/IEC-29500:2012].