As well as conventional data layers, users can draw on a map with annotation (also known as freehand items or drawing tools). This is rather like drawing on the map with an erasable pen. The annotation drawing tools can also be used with Layouts to add images, text labels, etc.
The drawing tools are found on the Drawing Toolbar:
If the toolbar is un-docked, it may look like this:
The Arrow button on the left is used to select an existing shape object. You can then edit it (double click or right-click and select Properties); delete it (press the Delete key); or change the drawing order (double click, select from menu).
The following annotation shapes are available: