When you add an edit-combo or auto-suggest control to a UX, you might want the width of the window that displays the pick-list to be the same as the width of the control itself. (Much like the width of the dropdown window matches the width of a select control). This is easily achieved by setting the width of the window in the edit-combo or auto-suggest builder to 'match'.
The width of dropdown windows can also be set to 'match'.
In this video we show how the 'match' window width setting is used.