A <em>widget</em> is a way to edit a field. Some field types, such as plain text single-line fields, have only one widget available (in this case, a single-line text input field). Other field types offer choices for the widget; for example, single-valued <em>List</em> fields can use a <em>Select</em> or <em>Radio button</em> widget for editing. Many widget types have settings that further define how the field can be edited.