Once turned on, this gives product suggestions in a dropdown menu
that appears right below the search box, as shown
below:
The user can navigate up or down the list using the cursor keys
and 'enter' to choose an item. Alternative, the mouse can be
used.
This functionality is not a replacement for the
full Kartris search which occurs when you submit a search term in the
box. That search is more sophisticated; it will search more fields and
rank results based on relevance (see @13.2. Kartris Site Search. This
suggestion feature finds products where the name contains the search
text entered, or where any versions that belong to it has an SKU or name
which contains the text - but in many cases these results will be
sufficient.