Although ODS Graphics is designed to automate the creation of high-quality statistical graphics, you might occasionally need to modify your graphs. You can make persistent changes by modifying the ODS graph template for a particular plot. (For an introduction to graph template modification, see Chapter 25, ODS Graphics Template Modification.) A graph template is a program, written in the Graph Template Language (GTL), that specifies the layout and details of a graph.
Note: The SAS System provides a template for each graph that it creates, so you do not need to know anything about templates in order to create statistical graphics.