Definicja preselection field

List box in which the user selects an object or element before entering a specific value for this object or element in a second field.

Example:

You can search for products by catalogs such as hardware, software, accessories, or books. The quick search comprises a preselection field and a second field for entering a search term.

When searching for a particular software product, the user preselects "Software". The user then enters a search term that describes the required software and starts the search.