Search by First Letter can be enabled in the lookup windows.
The following screen shot shows lookup properties of the field Products / Fields / Suppliers. Toggle the “Search by First Letter” check box to enable the feature.
![Property 'Search by First Letter' in the 'Lookup' section of a field Property 'Search by First Letter' in the 'Lookup' section of a field](/blog/2012/03/search-by-first-letter-in-lookup/image02.png)
This is how the list of suppliers is rendered when a lookup window is displayed.
![Feature 'Search by First Letter' enabled in a lookup window Feature 'Search by First Letter' enabled in a lookup window](/blog/2012/03/search-by-first-letter-in-lookup/image04.png)
Users can remove the selected “first letter” filter by clicking on the filter element in the filter details area.
![Filter element can be removed from the list of active filters via a single mouse-click Filter element can be removed from the list of active filters via a single mouse-click](/blog/2012/03/search-by-first-letter-in-lookup/image06.png)