## add(item) {#sdtlistitem} Adds an item to this collection. ```Js add(item: Aspose.Words.Markup.SdtListItem) ``` | Parameter | Type | Description | | --- | --- | --- | | item | [SdtListItem](../........ ```js add(item: Aspose.Words.Markup...structured document tags. ```js let doc = new aw.Document();...