## start_bookmark(bookmark_name) {#str} Marks the current position in the Document as a bookmark start. ```python def start_bookmark(self, bookmark_name: str): ... ``` | Parameter | Type | Descript......```python doc = aw.Document() builder = aw.DocumentBuilder(doc=doc)...end_bookmark('MyBookmark') self.assertEqual(1, doc.range.bookmarks.count) self....