Graph menu 

Provides commands for modifying the graph of the function call. 

Nodes menu 

Provides commands for modifying the nodes displayed. 

Function text box 

Allows you to enter the function or subroutine you want to graph. Click the arrow at the end of the Function text box to access the list of functions and subroutines previously graphed. 

Add button 

Adds a node with the given function to the Call Graph pane. 

Find button 

Moves the Call Graph pane to show the node for the given function or subroutine. 

Call Graph pane 

Displays the relationships of functions and subroutines in the source. You can select a single function or subroutine, or multiple functions and subroutines, and reposition them in the Call Graph pane. 

Expand Left button 

Shows all nodes that directly call the selected node (one level of parents). 

Expand Right button 

Shows all nodes called directly by the selected function or subroutine (one level of children). 

Expand Both button 

Shows all nodes directly called by and all nodes that directly call the selected node (one level of parents and children). Double-clicking on a node is equivalent to Expand Both. 

Collapse Left button 

Hides all nodes that directly call the selected node (one level of parents). 

Collapse Right button 

Hides all nodes called directly by the selected (one level of children). 

Show Source button 

Displays the source file containing the selected node in an editor window. Starts an editor if none is running. 

Message footer 

Reports the number of nodes displayed, the number of nodes added, and the number of nodes not displayed, as well as error messages.