Product Administration Guide > Customizable Product User Interface >
About the Default User Interface
If you do not select a base theme or product theme, the system displays all the configurable items in the customizable product on a single selection page.
If you do not select controls, the system makes intelligent choices for UI controls based on attribute domain type and upon relationship cardinality.
For example, if an attribute has an LOV type domain, the system will display a combo box for setting the attribute. If the attribute has a range type domain, the system will display a text box for entering the range value.
If a relationship has a min and max cardinality of 1, the system will display a combo box without multiple instances. If the max cardinality is greater than 1, a combo box with multiple instances displays.