The Graph Pane is where NodeXL shows the graph when you click the Show Graph button. It's on the right side of the main Excel window.
(Confusingly, the Graph Pane has a title bar that says "Document Actions," but in NodeXL you should think of it as the Graph Pane. Document Actions is an Excel pane that is not exclusive to NodeXL, and Excel calls it Document Actions no matter which program is using it.)
The Graph Pane can be resized, undocked from the main Excel window, and hidden.
The Graph Pane can include a legend if you choose to show one. The legend shows any visual attributes that have been autofilled using NodeXL's Autofill Columns feature. If you autofill the Vertex Size column using the Degree column as a source, for example, then the legend will look something like this:
This legend indicates that the Size column was autofilled with Degree, which ranged from 1 to 9.
The Graph Pane can also include x- and y-axes, which can be useful when you autofill the X and Y columns on the Vertices worksheet. The axes include labels that indicate the source columns, and the axis units are determined by the range of numbers in the source columns.