## index_of_key(name) {#str} Returns the zero-based index of the specified bookmark in the collection. ```python def index_of_key(self, name: str): ... ``` | Parameter | Type | Description | | --- ......```python doc = aw.Document() builder = aw.DocumentBuilder(doc=doc)...end_bookmark('Bookmark 3') # When saving to .pdf, bookmarks can be accessed via...