You can Ctrl-click to add a single node to the group. Shift-clicking a node adds it to the group along with all the nodes that it calls. Once you have selected a group of nodes, you can move them as a group with the middle mouse button or perform other operations on them. Often you can specify a node from a text view, search field, or dialog box, and it will be highlighted in the graph. Another way to simplify a graph is to reduce the number of nodes and arcs.
Different tools have different filtering options.
Both menus are shown in Figure 17 . The Node menu lets you filter a single node. It is displayed by holding the right mouse button down while the cursor is over the node. The name of the selected node appears at the top of the menu. Immediate Children Displays the functions called by the selected node.