1) provides suggestions for US state names using the cachedAjax mode with minChars="2".

2) Same suggestions in lazyClient mode. Additionally allows multiple selections using tokens (comma and space chars). This means you will be able to separate different values with a space or comma and get a separate suggestions for any of them. The autofill attribute is set to false so you will notice values are not automatically added.

3) With the selectFirst attribute set to false pressing enter will not choose the value from list automatically, but just submit currently entered value.