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,
Smalltalk/X. Smalltalk/X is a complete implementation of the programming language Smalltalk with a comprehensive class library and a graphical development environment. The language offers all programming options and incremental translation. That makes it a powerful foundation for project development.