Constants
Constants can contain a string or a
number value that is passed on as in input to functions, or to a target node.
Constants can be a starting point of a function scope container. This is indicated by the lock sign on the constant widget. Constant which is a starting point, cannot be removed from the function container. In such a case, delete the whole function container.
In scenarios where you have a Default Value and a Constant assigned to a single target node, the Default Value is not taken into consideration.
For more details on Default Value, see Set default value.