Wats the difference between fl and flash

Hello Friends,

I need a small clarification. infact i want to know the exact difference between “import fl.” and “import flash.” ??

import fl.events.;
import flash.events.
;

at what point of time we will use fl. and flash. ?? or in what cases do we use those ??

can anyone helpme ??

waiting for ur replies…

Rajesh