If the parameter for a Filter is known to always be the same, a Predetermined value can be configured for that filter.
If a filter has predetermined values, the effect is that any parameters given to this filter by the user or client code are ignored, i.e. the filter's values becomes "hardcoded".
Predetermined values can defined during creation of a filter:
They can also be added, edited or removed in the The Details panel.
Example of a filter, that always filters out results, which do not have an item_metafield.name Like "*key":