1. Open the "Current Elements" palette section.
1.1 Find the specific shape in that palette section.
1.2 Right-click said shape to open its context menu.
1.3 Choose "Select Matching Elements".
All the nodes matching the desired specific shape should now be selected.
2. Open "Edit" -> "Find".
2.1 On tab "General" turn on "Act On Current Selection Only" and turn off the remaining options on that tab.
2.2 On tab "Nodes" turn on "Use These Criteria" and set "Select" to "All".
2.3 Click "Ok".
Only one node with the desired specific shape should now be selected. Use F3 to step the selection though the remaining nodes with the desired specific shape.
