Once you've created a graphics layer (as described in How to add a graphics layer), you need to add graphics to it to display data. In most cases, you'll create graphics using geometries that have been created by actions such as executing a query or drawing a shape on the map.
/ Classtalk : A classroom communication system for active learning. In: Journal of Computing in Higher Education. 1996 ; Vol. 7, No. 2. pp. 3-47 @article{cc819104b3034becb09019ef6c28d94c,
2. Use of the classtalk system in interactive teaching 2.1 The classtalk system 2.2 Interactive Quiz Sessions using the Classtalk system 2.3 Posting of interactive session record on the Web 2.4 Classtalk orientation sessions 3. Interactive Quiz (IQ) sessions 3.1 Peer instruction and our approach 3.2 IQ questions