what does this option mean?

"minimized windows icon"

if i check this option, what will happen?

#425534

it means that it will minimize the icon of the app running to to dock - T/F

see here

#425538

Instead of asking, why don't you try it out, and if nothing happens ask?

#425580

i tried but nothing happend.

the option "Minimized to dock" can minimize the running application to dock.

but "minimize windows icon" can do nothing.

#425635

It enables/disables the little icon on the minimized window when its in the dock.

#425661

I got it,

sorry for never noticed that small icon

#425779