Closing all windows in the background

[vazzily]

This may seem like a stupid question but here it goes!

Is there a way to close or stop the os from keeping all the windows that i open in the background?? It doesn't show it in the dock anymore so when i press the F9 function there is like a 100 windows open and sucking up the CPU juice!

Any tips how to remove that function ?

Thanks

OS : 10.6.8

 

[yawns]

Use ⌘Q or "Quit," from the application menu when you want an application to exit.