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 changes can cause a relayout of the graph.

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 relayout 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 Concepts.