How to take advantage of item metadata widget configuration

[No3x (Christian)]

@JustinG

All the widget metadata does is call the specified widget and if that widget has a parameter that is defined as an item it passes the name of the item to the widget.

People are using parameters for the widgets though (e.g. [OH3] Add metadata to Items via configuration files).

Can someone please show a good example when and how to use this? Or explain the concept?