## CustomPart class Represents a custom (arbitrary content) part, that is not defined by the ISO/IEC 29500 Standard. To learn more, visit the [Structured Document Tags or Content Control](https://d......defined by the ISO/IEC 29500 standard. To learn more, visit the...Control](https://docs.aspose.com/words/python-net/working-with-content-control-sdt/)...