You can tweak the UI of the node such as changing the icon of the node or providing tooltips.
Double click on any node in the flow to open the Edit switch node window.
Click the node settings tab.
In the node settings, you can find the following:
Inputs. Give custom text in this field. This text appears as a tooltip when the user hovers on the input pin.
Outputs. Give custom text in this field. This text appears as a tooltip when the user hovers on the output pin.
Icon. Use this to change the default icon given to a node by selecting an icon from the list of icons provided.
