## add(item) {#sdtListitem} Adds an item to this collection. ```python def add(self, item: aspose.words.markup.SdtListItem): ... ``` | Parameter | Type | Description | | --- | --- | --- | | item | ......Shows how to work with drop down-list structured document tags. ```python...aw.markup.SdtType.DROP_DOWN_LIST, aw.markup.MarkupLevel.BLOCK)...