General Editing and Annotation Concepts :: SAS(R) 9.3 ODS Graphics Editor: User's Guide

You can edit and annotate graphs. Editing and annotating tasks differ from each other in the following ways:

When you edit a graph, you edit elements of the graph such as the title, footnote, or legend.

You can also change the visual characteristics of the plots, such as the colors of markers and lines. You can change the style applied to a graph, and you can resize the graph.

Some of these edits can cause the layout of the graph to change.
When you annotate a graph, you add objects on top of the original graph. You can add text, lines, arrows, ovals, rectangles, images, and markers. Annotation objects are rendered in a separate layer on top of the graphical elements and do not cause any changes to the layout of the graph.

Annotation objects can be attached to graph data so that, if the graph is resized, the annotations move with the data. For more information, Understanding Annotation Objects and Data.
You can edit Graph Template Language (GTL) annotations (DRAW statements) that are part of the original graph, as well as annotations that were created with the ODS Graphics procedures. These edits do not cause any changes to the layout of the graph.