## add(part) {#customXmlpart} Adds an item to the collection. ```python def add(self, part: aspose.words.markup.CustomXmlPart): ... ``` | Parameter | Type | Description | | --- | --- | --- | | part......| The custom XML part to add. | ## add(id, xml) {#str_str} Creates...Creates a new XML part with the specified XML and adds it to the...